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Assalam o Alaikum in this lecture i am going to discuss Applications of pericyclic reactions OR Biosynthesis of Vitamin D-D2-D3. vitamin D2 is known as ergocalciferol and vitamin D3 is known as cholecalciferol. we synthesize cholecalciferol and ergocalciferol from their precurser. the precurser used are Ergosterol and 7-dehydrocholesterol.This lecture is delivered in Urdu ,Hindi and English. Vitamin D is the general name for two related compounds called cholecalciferol (vitamin D3) and ergocalciferol (vitamin D2). These two compounds differ in the identity of the side chain, R group.Vitamin D serves an important function in that it increases the body’s ability to metabolize the calcium present in the foods we eat. Calcium is essential because it is used in the formation of bones and teeth. A deficiency of vitamin D can cause the childhood disease called rickets, which is characterized by abnormal bone growth. Although most food does not contain substantial amounts of vitami...

Assalam o Alaikum in this lecture i am going to discuss Applications of pericyclic reactions OR Biosynthesis of Vitamin D-D2-D3. vitamin D2 is known as ergocalciferol and vitamin D3 is known as cholecalciferol. we synthesize cholecalciferol and ergocalciferol from their precurser. the precurser used are Ergosterol and 7-dehydrocholesterol.This lecture is delivered in Urdu ,Hindi and English. Vitamin D is the general name for two related compounds called cholecalciferol (vitamin D3) and ergocalciferol (vitamin D2). These two compounds differ in the identity of the side chain, R group.Vitamin D serves an important function in that it increases the body’s ability to metabolize the calcium present in the foods we eat. Calcium is essential because it is used in the formation of bones and teeth. A deficiency of vitamin D can cause the childhood disease called rickets, which is characterized by abnormal bone growth. Although most food does not contain substantial amounts of vitamin D, so...

Assalam o Alaikum in this lecture i am going to discuss sigmatropic rearrangements with its types that are cope rearrangement and claisen rearrangement.This lecture is delivered in Urdu ,Hindi and English. 1) 33 sigmatropic rearrangement orbitals 2) 23 sigmatropic rearrangement 3) sigmatropic rearrangement fmo 4) application of sigmatropic rearrangement 5) 12 sigmatropic rearrangement 6) sigmatropic rearrangement suprafacial and antarafacial 7) predict the expected product of the following sigmatropic rearrangement 8) cope rearrangement 9) 2,3 sigmatropic rearrangement 10) sigmatropic rearrangement example 11) how to classify sigmatropic reactions 12) 3,5 sigmatropic rearrangement 13) cope rearrangement alkene geometry 14) sigmatropic rearrangement practice problems 15) sigmatropic rearrangement fmo 16) suprafacial and antarafacial shift 17) 1,3-methyl shift 18) claisen and cope rearrangement mechanism 19) pericyclic reaction 20) antarafacial and suprafacial difference 21) sig...

Assalam o Alaikum in this lecture i am going to discuss electrocyclic reaction with its types at photochemical and thermal conditions.An electrocyclic reaction is a pericyclic process in which a conjugated polyene undergoes cyclization. In the process, one π bond is converted into a σ bond, while the remaining π bonds all change their location. The newly formed σ bond joins the ends of the original π system, thereby creating a ring. Two examples are shown. Both reactions are reversible, but the position of equilibrium is different. The first example favors the cyclic product, while the second example disfavors formation of the cyclic product as a result of the ring strain associated with a four-membered ring. Note that the configuration of the product is dependent not only on the configuration of the reactant but also on the conditions of ring closure. That is, a different outcome is observed when the reaction is performed under thermal conditions (using heat) or under photochemical ...

Assalam o Alaikum in this lecture i am going to discuss electrocyclic reaction with its types at photochemical and thermal conditions.An electrocyclic reaction is a pericyclic process in which a conjugated polyene undergoes cyclization. In the process, one π bond is converted into a σ bond, while the remaining π bonds all change their location. The newly formed σ bond joins the ends of the original π system, thereby creating a ring. Two examples are shown. Both reactions are reversible, but the position of equilibrium is different. The first example favors the cyclic product, while the second example disfavors formation of the cyclic product as a result of the ring strain associated with a four-membered ring. Note that the configuration of the product is dependent not only on the configuration of the reactant but also on the conditions of ring closure. That is, a different outcome is observed when the reaction is performed under thermal conditions (using heat) or under photochemical ...

Assalam o Alaikum in this lecture i am going to discuss 4+2 CycloAddition-Diels alder reaction acording to MOT.This lecture is delivered in Urdu ,Hindi and English. Main contents of this organic chemistry lecture are following:- 1. FMO Approach PeriCyclic Reactions & Cyclo Addition OR Diels Alder reactions 4+2 Suprafacial Antrafacial 2. Diels-Alder Reaction 3. organic chemistry lecture 4+2 addition 4. MOT of 4+2 addition 5. FMO of 1,3 butadiene 6. FMO of ethylene 7. cycloaddition rules 8. what is a cycloaddition reaction 9. 4+2 cycloaddition or Diels--Alder Reaction 10. cycloaddition chemistry 11. Suprafacial symmetry allowed 12. HOMO 13. LUMO 14. cycloaddition reaction 15. cycloaddition reaction mechanism 16. cycloaddition alkene 17. changes in the numbers of sigma bonds in pericyclic reactions 18. changes in the numbers of pi bonds in pericyclic reactions 19. changes in the numbers of sigma bonds in cycloaddition reaction 20. changes in the numbers of pi bonds in cycl...

Assalam o Alaikum in this lecture i am going to discuss how MOT explain diels alder reaction or 2+2 addition in pericyclic reaction.This lecture is delivered in Urdu ,Hindi and English. Main contents of this organic chemistry lecture are following:- 1. FMO Approach PeriCyclic Reactions & Cyclo Addition OR Diels Alder reactions 2+2 Suprafacial Antrafacial 2. Diels--Alder Reaction 3. organic chemistry 4. cycloaddition rules 5. cycloaddition antarafacial 6. what is a cycloaddition reaction 7. ethylene cycloaddition 8. cycloaddition chemistry 9. Suprafacial symmetry allowed 10. Antarafacial symmetry forbidden 11. HOMO 12. LUMO 13. cycloaddition reaction 14. cycloaddition reaction mechanism 15. cycloaddition alkene 16. changes in the numbers of sigma bonds in pericyclic reactions 17. changes in the numbers of pi bonds in pericyclic reactions 18. changes in the numbers of sigma bonds in cycloaddition reaction 19. changes in the numbers of pi bonds in cycloaddition reaction 20. di...