Polystyrene-supported carbodiimide catalysts
CP Smith, GH Temme
Index: Smith, Curtis P.; Temme, George H. Journal of Organic Chemistry, 1983 , vol. 48, # 24 p. 4681 - 4685
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Citation Number: 12
Abstract
Polystyrene-anchored triphenylarsine oxide 8 has been prepared from brominated polystyrene beads by a lithium-mediated arsenation-hydrogen peroxide oxidation sequence. Compound 8 with only 0.6 mequiv of As/g has been found to be a highly effective, insoluble catalyst for the conversion of aryl iaocyanatea to diarylcarbodiimides in high yield. Up to 5.6 X 104 turnovers of the catalyst 8 in the carbodiimide-forming reaction have been ...
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