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2005
Carboxylic hydrazides
Q 0493
Direct Microwave Synthesis of N,N'-Diacylhydrazines and Boc-Protected Hyby in situ Carbonylations under Air. — A novel direct method for the
18- 081 drazides
preparation of title diacylhydrazines (IV) and (VI) is presented, involving the microwave-assisted palladium-catalyzed carbonylation of hydrazides with Mo(CO)6 in the
presence of aryl iodides or bromides. The reaction proceeds within a few minutes and
provides moderate to good yields of diacylhydrazines. A one-pot hydrazidocarbonylation—dehydration reaction sequence is presented as a direct synthesis of aryl-substituted oxadiazoles like (VII). — (HERRERO, M. A.; WANNBERG, J.; LARHED*, M.;
Synlett 2004, 13, 2335-2338; Dep. Med. Chem., Uppsala Univ., S-751 23 Uppsala,
Swed.; Eng.) — Mischke
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