Organic Syntheses: Common Reactions in Organic Syntheses

Organic Syntheses: Common Reactions in Organic Syntheses

Learn to use sodamide as well as moist ether.

Benzyl alcohol à ethers and esters.

Similarly, methyl substituted benzyl alcohols.

Pure sodium phenoxide, monosodio salts of benzene diols.

Prepare analytically pure benzene and spectroscopically pure ethanol in bulk.

Oxidize para-xylene in bulk.

Learn to handle glyoxal in bulk. Prepare formamidonitrone.

Dihydronaphthalene- handle with care.

Learn why calcium (SANDOZ since 1941) is needed for proper functioning of vitamin C in human body.

Pyridine-1-oxide plus phenyl methyl propiolate in 50:1 molar ratio in dry and refluxing benzene and tolune. As concentrated a solution as possible. Isolate the product in pure form.

Try chlorination with N-chlorosuccinimide in ice cold carbon tetrachloride. Succinimide floats in carbon tetrachloride. (this was a hint from Albert Eschenmoser, Zurich ETH, 1970). Bulk purchase of NClS.

Thermal and conrotatory electrocyclic reactions of butadienes.

Use C-2 symmetry operation if you want to draw a symmetry-allowed correlation diagram. Hydrogen atom cannot stay in one of its spin degenerate states.

Concept of a Greek pi: sphere ingrained in pi in Physical Chemistry and meaning of pi squired. (Riemannian pi is a different chapter)

Otherwise you could as well write 22.000001/7for pi. What harm? Determination of exact position of a moving particle is impossible.

Chemists all over the world unite

T K Das (Gupta)

City of Siliguri

& City of Calcutta- a City of hard toil and not of beggars. No food if you do not work.