Preparation and Intramolecular Cyclization of Bis (carbodiimides). Synthesis and X-ray Structure of 1, 3-Diazetidine-2, 4-diimine Derivatives

M Alajarín, P Molina, P Sánchez-Andrada…

文献索引：Molina, Pedro; Alajarin, Mateo; Lopez-Leonardo, Carmen; Cano, Felix Hernandez; Llamas-Saiz, Antonio L.; et al. Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1992 , # 2 p. 199 - 210

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被引用次数: 19

摘要

Aza-Wittig reactions of bis (iminophosphorane) 1 derived from 2, 2'-diazidobiphenyl with aromatic isocyanates provided dibenzo [d, f]-1, 3-diazetidino [1, 2-a] diazepine derivatives 2 in moderate yields. Similar results can be achieved from the reaction of 2, 2'-bis (isothiocyanato) biphenyl 4 with aryliminophosphoranes. Treatment of bis (isothiocyanate) 4 with arylamines and further dehydrosulfurization of the resulting bis (thioureas) leads to ...