Chemische Berichte

Hydrated Oxocarbons, II. Preparation of a New Class of Thermochromic Boron Heterocycles from Octahydroxycyclobutane or Dihydroxybutenedioic Acid

M Yalpani, R Köster

Index: Yalpani, Mohamed; Koester, Roland Chemische Berichte, 1983 , vol. 116, # 10 p. 3332 - 3337

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Citation Number: 7

Abstract

Abstract The reaction of octahydroxycyclobutane (2) with activated triethylborane gives a low yield of the thermochromic 2, 6-diethyl-1, 3, 5, 7-tetraoxa-2, 6-dibora-4, 8-octalindione (5b) by ring cleavage of 2. Additional examples of this novel class of compounds have also been prepared directly by reacting dihydroxyfumaric acid (6) with various alkyl-or arylboranes. With the exception of the tert-butyl-(5f) and the aryl derivatives 51, m, the new compounds ...