�ݺ�ߣshows by User: ApoorvRastogi7

�ݺ�ߣshows by User: ApoorvRastogi7 / http://www.slideshare.net/images/logo.gif �ݺ�ߣshows by User: ApoorvRastogi7 / Thu, 22 Mar 2018 06:51:22 GMT �ݺ�ߣShare feed for �ݺ�ߣshows by User: ApoorvRastogi7 Protecting Groups In Organic Synthesis /slideshow/protecting-groups-in-organic-synthesisprotec/91511344 apoorvrastogiseminar-180322065122
When there are two functional groups of unequal reactivity within a molecule, the more reactive group can be made to react alone, but it may not be possible to react the less reactive functional group selectively. A group the use of which makes possible to react a less reactive functional group selectively in presence of a more reactive group is known as protecting group. A protecting group blocks the reactivity of a functional group by converting it into a different group which is inert to the conditions of some reaction(s) that is to be carried out as part of a synthetic route ]]>
When there are two functional groups of unequal reactivity within a molecule, the more reactive group can be made to react alone, but it may not be possible to react the less reactive functional group selectively. A group the use of which makes possible to react a less reactive functional group selectively in presence of a more reactive group is known as protecting group. A protecting group blocks the reactivity of a functional group by converting it into a different group which is inert to the conditions of some reaction(s) that is to be carried out as part of a synthetic route ]]> Thu, 22 Mar 2018 06:51:22 GMT /slideshow/protecting-groups-in-organic-synthesisprotec/91511344 ApoorvRastogi7@slideshare.net(ApoorvRastogi7) Protecting Groups In Organic Synthesis ApoorvRastogi7 When there are two functional groups of unequal reactivity within a molecule, the more reactive group can be made to react alone, but it may not be possible to react the less reactive functional group selectively. A group the use of which makes possible to react a less reactive functional group selectively in presence of a more reactive group is known as protecting group. A protecting group blocks the reactivity of a functional group by converting it into a different group which is inert to the conditions of some reaction(s) that is to be carried out as part of a synthetic route <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/apoorvrastogiseminar-180322065122-thumbnail.jpg?width=120&height=120&fit=bounds" /><br> When there are two functional groups of unequal reactivity within a molecule, the more reactive group can be made to react alone, but it may not be possible to react the less reactive functional group selectively. A group the use of which makes possible to react a less reactive functional group selectively in presence of a more reactive group is known as protecting group. A protecting group blocks the reactivity of a functional group by converting it into a different group which is inert to the conditions of some reaction(s) that is to be carried out as part of a synthetic route

Protecting Groups In Organic Synthesis from Apoorv Rastogi

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0 Oxidation by thallium nitrate /slideshow/oxidation-by-thallium-nitrate/90912491 organicprojectapoorv-180316125229
Name: - Thall ium(I I I ) Nit rate t rihydrate • Abbreviat ion: - TTN • Melt ing point : - 102-105 °C. • Solubi lity: - water, organic solvents. • General informat ion:- o Oxidizing agent ; Lewis acid. o All thall ium compounds are ext remely toxic to inhalat ion, skin contact , and ingest ion. Toxicity is cumulat ive. Ext reme caut ion should be used when handling these materials. Use in a fume hood. Thallium nitrate is a select ive and versat i le oxidizing agent , general ly accompanied by reduct ion of Tl(I I I ) to Tl(I ). Thallium nitrate is elect rophil ic in character, so it reacts wi th alkenes & alkynes to give addit ion products. I t is very ef fect ive oxidizing agent because: - (i ) Reduct ion potent ial of this half cell react ion is posit ive and high. (i i) Carbon-TI(I I I ) bond is very weak, so it undergo heterolyt ic cleavage very readily and form carbocat ion easi ly. (i ii ) Nit rate-ion is not a very good nucleophile, so the solvent may part icipate select ively as nucleophile in the react ion.]]>
Name: - Thall ium(I I I ) Nit rate t rihydrate • Abbreviat ion: - TTN • Melt ing point : - 102-105 °C. • Solubi lity: - water, organic solvents. • General informat ion:- o Oxidizing agent ; Lewis acid. o All thall ium compounds are ext remely toxic to inhalat ion, skin contact , and ingest ion. Toxicity is cumulat ive. Ext reme caut ion should be used when handling these materials. Use in a fume hood. Thallium nitrate is a select ive and versat i le oxidizing agent , general ly accompanied by reduct ion of Tl(I I I ) to Tl(I ). Thallium nitrate is elect rophil ic in character, so it reacts wi th alkenes & alkynes to give addit ion products. I t is very ef fect ive oxidizing agent because: - (i ) Reduct ion potent ial of this half cell react ion is posit ive and high. (i i) Carbon-TI(I I I ) bond is very weak, so it undergo heterolyt ic cleavage very readily and form carbocat ion easi ly. (i ii ) Nit rate-ion is not a very good nucleophile, so the solvent may part icipate select ively as nucleophile in the react ion.]]> Fri, 16 Mar 2018 12:52:29 GMT /slideshow/oxidation-by-thallium-nitrate/90912491 ApoorvRastogi7@slideshare.net(ApoorvRastogi7) Oxidation by thallium nitrate ApoorvRastogi7 Name: - Thall ium(I I I ) Nit rate t rihydrate • Abbreviat ion: - TTN • Melt ing point : - 102-105 °C. • Solubi lity: - water, organic solvents. • General informat ion:- o Oxidizing agent ; Lewis acid. o All thall ium compounds are ext remely toxic to inhalat ion, skin contact , and ingest ion. Toxicity is cumulat ive. Ext reme caut ion should be used when handling these materials. Use in a fume hood. Thallium nitrate is a select ive and versat i le oxidizing agent , general ly accompanied by reduct ion of Tl(I I I ) to Tl(I ). Thallium nitrate is elect rophil ic in character, so it reacts wi th alkenes & alkynes to give addit ion products. I t is very ef fect ive oxidizing agent because: - (i ) Reduct ion potent ial of this half cell react ion is posit ive and high. (i i) Carbon-TI(I I I ) bond is very weak, so it undergo heterolyt ic cleavage very readily and form carbocat ion easi ly. (i ii ) Nit rate-ion is not a very good nucleophile, so the solvent may part icipate select ively as nucleophile in the react ion. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/organicprojectapoorv-180316125229-thumbnail.jpg?width=120&height=120&fit=bounds" /><br> Name: - Thall ium(I I I ) Nit rate t rihydrate • Abbreviat ion: - TTN • Melt ing point : - 102-105 °C. • Solubi lity: - water, organic solvents. • General informat ion:- o Oxidizing agent ; Lewis acid. o All thall ium compounds are ext remely toxic to inhalat ion, skin contact , and ingest ion. Toxicity is cumulat ive. Ext reme caut ion should be used when handling these materials. Use in a fume hood. Thallium nitrate is a select ive and versat i le oxidizing agent , general ly accompanied by reduct ion of Tl(I I I ) to Tl(I ). Thallium nitrate is elect rophil ic in character, so it reacts wi th alkenes & alkynes to give addit ion products. I t is very ef fect ive oxidizing agent because: - (i ) Reduct ion potent ial of this half cell react ion is posit ive and high. (i i) Carbon-TI(I I I ) bond is very weak, so it undergo heterolyt ic cleavage very readily and form carbocat ion easi ly. (i ii ) Nit rate-ion is not a very good nucleophile, so the solvent may part icipate select ively as nucleophile in the react ion.

Oxidation by thallium nitrate from Apoorv Rastogi

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0 Glass transition tempreature /slideshow/glass-transition-tempreature/90911407 glasstransitiontempreature-180316123841
A polymer is a large molecule, or macromolecule, composed of many repeated subunits. The structure of a polymer is defined in terms of crystallinity. This might also be thought of as the degree of order or regularity in how the molecules are packed together. A well-ordered polymer is considered crystalline. The opposite is an amorphous polymer. Almost all amorphous polymers possess a temperature boundary. Above this temperature the substance remains soft, rubbery and flexible, and below this temperature it becomes hard, glassy and brittle. The temperature, below which a polymer is hard and above which it is soft is called the glass transition temperature. For example:- When an ordinary natural rubber ball if cooled below -70oC becomes so hard and brittle that it will break into several pieces like a glass ball falling on a hard surface. This happens because there is a temperature boundary for amorphous. The transition from the rubber to the glass-like state is an important feature of polymer behavior, marking as it does a region where dramatic changes in the physical properties, such as hardness and elasticity, are observed. The hard, glassy, brittle state is known as the glassy state and the soft, rubbery, flexible state is the rubbery or viscoelastic state. The glass transition temperature is denoted by Tg. Tf is another term for temperature, when a polymer is heated further, it forms a viscous liquid and starts flowing, this state is known as viscous-fluid state and the temperature is termed as flow temperature (Tf). Tg is an important characteristic property of any polymer as it has an important bearing on the potential application of a polymer.]]>
A polymer is a large molecule, or macromolecule, composed of many repeated subunits. The structure of a polymer is defined in terms of crystallinity. This might also be thought of as the degree of order or regularity in how the molecules are packed together. A well-ordered polymer is considered crystalline. The opposite is an amorphous polymer. Almost all amorphous polymers possess a temperature boundary. Above this temperature the substance remains soft, rubbery and flexible, and below this temperature it becomes hard, glassy and brittle. The temperature, below which a polymer is hard and above which it is soft is called the glass transition temperature. For example:- When an ordinary natural rubber ball if cooled below -70oC becomes so hard and brittle that it will break into several pieces like a glass ball falling on a hard surface. This happens because there is a temperature boundary for amorphous. The transition from the rubber to the glass-like state is an important feature of polymer behavior, marking as it does a region where dramatic changes in the physical properties, such as hardness and elasticity, are observed. The hard, glassy, brittle state is known as the glassy state and the soft, rubbery, flexible state is the rubbery or viscoelastic state. The glass transition temperature is denoted by Tg. Tf is another term for temperature, when a polymer is heated further, it forms a viscous liquid and starts flowing, this state is known as viscous-fluid state and the temperature is termed as flow temperature (Tf). Tg is an important characteristic property of any polymer as it has an important bearing on the potential application of a polymer.]]> Fri, 16 Mar 2018 12:38:40 GMT /slideshow/glass-transition-tempreature/90911407 ApoorvRastogi7@slideshare.net(ApoorvRastogi7) Glass transition tempreature ApoorvRastogi7 A polymer is a large molecule, or macromolecule, composed of many repeated subunits. The structure of a polymer is defined in terms of crystallinity. This might also be thought of as the degree of order or regularity in how the molecules are packed together. A well-ordered polymer is considered crystalline. The opposite is an amorphous polymer. Almost all amorphous polymers possess a temperature boundary. Above this temperature the substance remains soft, rubbery and flexible, and below this temperature it becomes hard, glassy and brittle. The temperature, below which a polymer is hard and above which it is soft is called the glass transition temperature. For example:- When an ordinary natural rubber ball if cooled below -70oC becomes so hard and brittle that it will break into several pieces like a glass ball falling on a hard surface. This happens because there is a temperature boundary for amorphous. The transition from the rubber to the glass-like state is an important feature of polymer behavior, marking as it does a region where dramatic changes in the physical properties, such as hardness and elasticity, are observed. The hard, glassy, brittle state is known as the glassy state and the soft, rubbery, flexible state is the rubbery or viscoelastic state. The glass transition temperature is denoted by Tg. Tf is another term for temperature, when a polymer is heated further, it forms a viscous liquid and starts flowing, this state is known as viscous-fluid state and the temperature is termed as flow temperature (Tf). Tg is an important characteristic property of any polymer as it has an important bearing on the potential application of a polymer. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/glasstransitiontempreature-180316123841-thumbnail.jpg?width=120&height=120&fit=bounds" /><br> A polymer is a large molecule, or macromolecule, composed of many repeated subunits. The structure of a polymer is defined in terms of crystallinity. This might also be thought of as the degree of order or regularity in how the molecules are packed together. A well-ordered polymer is considered crystalline. The opposite is an amorphous polymer. Almost all amorphous polymers possess a temperature boundary. Above this temperature the substance remains soft, rubbery and flexible, and below this temperature it becomes hard, glassy and brittle. The temperature, below which a polymer is hard and above which it is soft is called the glass transition temperature. For example:- When an ordinary natural rubber ball if cooled below -70oC becomes so hard and brittle that it will break into several pieces like a glass ball falling on a hard surface. This happens because there is a temperature boundary for amorphous. The transition from the rubber to the glass-like state is an important feature of polymer behavior, marking as it does a region where dramatic changes in the physical properties, such as hardness and elasticity, are observed. The hard, glassy, brittle state is known as the glassy state and the soft, rubbery, flexible state is the rubbery or viscoelastic state. The glass transition temperature is denoted by Tg. Tf is another term for temperature, when a polymer is heated further, it forms a viscous liquid and starts flowing, this state is known as viscous-fluid state and the temperature is termed as flow temperature (Tf). Tg is an important characteristic property of any polymer as it has an important bearing on the potential application of a polymer.

Glass transition tempreature from Apoorv Rastogi

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0 Claisen rearrangement /slideshow/claisen-rearrangement-87859707/87859707 claisenrearrangement-180212161843
Some Concepts Of Claisen Rearrangement]]>
Some Concepts Of Claisen Rearrangement]]> Mon, 12 Feb 2018 16:18:43 GMT /slideshow/claisen-rearrangement-87859707/87859707 ApoorvRastogi7@slideshare.net(ApoorvRastogi7) Claisen rearrangement ApoorvRastogi7 Some Concepts Of Claisen Rearrangement <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/claisenrearrangement-180212161843-thumbnail.jpg?width=120&height=120&fit=bounds" /><br> Some Concepts Of Claisen Rearrangement

Claisen rearrangement from Apoorv Rastogi

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0 https://public.slidesharecdn.com/v2/images/profile-picture.png https://cdn.slidesharecdn.com/ss_thumbnails/apoorvrastogiseminar-180322065122-thumbnail.jpg?width=320&height=320&fit=bounds slideshow/protecting-groups-in-organic-synthesisprotec/91511344 Protecting Groups In O... https://cdn.slidesharecdn.com/ss_thumbnails/organicprojectapoorv-180316125229-thumbnail.jpg?width=320&height=320&fit=bounds slideshow/oxidation-by-thallium-nitrate/90912491 Oxidation by thallium ... https://cdn.slidesharecdn.com/ss_thumbnails/glasstransitiontempreature-180316123841-thumbnail.jpg?width=320&height=320&fit=bounds slideshow/glass-transition-tempreature/90911407 Glass transition tempr...