1,4,2-Diazaphospholidine-3,5-diones and Related Compounds: A Lecture on Unpredictability in Catalysis
作者:Frank U. Richter
DOI:10.1002/chem.200900039
日期:2009.5.18
Whereas 1‐organyl‐phospholanes and 1‐organyl‐2,3‐dihydro‐1H‐phospholes catalyze isocyanate oligomerization, the reaction of isocyanates with 1‐organyl‐2,5‐dihydro‐1H‐phospholes results in the formation of 1,3‐dienes and a novel class of P‐heterocycles, 1,4,2‐diazaphospholidine‐3,5‐diones. Isothiocyanates and carbodiimides exhibit analogous behavior. The resultant species readily form P‐oxides, P‐sulfides
1-有机基-膦基化合物和1-有机基-2,3-二氢-1H-基团催化异氰酸酯的低聚反应,异氰酸酯与1-有机基-2,5-二氢-1H-基团的反应导致形成1 ,3-二烯和一类新颖的P-杂环,1,4,2-二氮磷吡啶-3,5-二酮。异硫氰酸酯和碳二亚胺表现出相似的行为。由此产生的物种很容易形成P-氧化物,P-硫化物(见图)和季鎓盐。