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Studies on Isocyanides and Related Compounds. A Facile Synthesis of Imidazo[1,5-a]imidazoles

✍ Scribed by Bossio, Ricardo ;Marcaccini, Stefano ;Pepino, Roberto

Publisher
John Wiley and Sons
Year
1993
Tongue
English
Weight
238 KB
Volume
1993
Category
Article
ISSN
0947-3440

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✦ Synopsis

Abstract

The Ugi four‐component condensation between 1,1‐diethoxy‐2‐isocyanoethane (2), cycloketones 1, amine hydrochlorides 4, and potassium thiocyanate (3a) or selenocyanate (3b) affords spiroimidazoles 5, which are cyclized to spiroimidazo[1,5‐a]imidazole‐5‐thiones (or selenones) 6.

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