A NEW SYNTHETIC APPROACH TO α, β-UNSATURATED PHOSPHONATES (1-METHYLENEALKANE-PHOSPHONATES)

S Inokawa, H Yamamoto

文献索引：Inokawa, S.; Yamamoto, H. Phosphorus and Sulfur and the Related Elements, 1983 , vol. 16, p. 79 - 82

全文：HTML全文

被引用次数: 11

摘要

TsCl R-CH-CH,OH R-CH-CH~OTS RC-CH,OTs A ... PCC: pyridinium chlorochromate DBU: 1,8-diazabicyclo[5.4.O]undec-7-ene ... We have now used these easily obtainable 112-epoxy- 1-alkylphosphonates (phos- phinate) 1 as starting materials, and we have prepared a,P-unsaturated phos- phonates (phosphinate) in moderate yields under mild conditions. Dimethyl 1,2-epoxy-l-methylethanepho~phonate ... I reflux I 1.1. I O=P(OCH,)2 la O=P(OCH,), 2 ...