Studies of Heteroaromaticity. XXXII. New Synthesis of 1, 2, 4-Oxadiazoles, Benzoxazoles, Benzothiazoles and Benzimidazole from Aromatic Hydroxamoyl Chlorides

T Sasaki, T Yoshioka, Y Suzuki

Index: Sasaki,T. et al. Bulletin of the Chemical Society of Japan, 1969 , vol. 42, p. 3335 - 3338

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Citation Number: 25

Abstract

There are many papers concerning the synthesis of five-membered heterocycles by the 1, 3- dipolar cycloaddition reactions of nitrile oxides, which afforded, with double bonded dipolarophiles, dihydro-heteroaromatic compounds in general. 2) It is also known that similar reactions with dipolarophiles having hetero-multiple bond generally proceed with some difficulty, except for their activated types. 3) This note deals with a new synthesis of 1 ...