89333-85-7Relevant articles and documents
NEW METHOD FOR REGIOSELECTIVE SYNTHESIS OF α-SUBSTITUTED ALLYLSILANES AND ITS APPLICATION TO THE SYNTHESIS OF E- AND Z-TAGETONES
Ochiai, Masahito,Sumi, Kenzo,Fujita, Eiichi,Tada, Shin-ichi
, p. 3346 - 3349 (2007/10/02)
Sequential addition of lithium salt of carbanion and tributylstannylmethyl iodide (3) to vinyl sulfone 2 afforded β-tributylstannyl sulfones 5, which gave substituted allylsilanes 1 in a regioselective manner by the smooth destannylsulfonation.Allylsilane 8 prepared by Michael type addition of isopropenyllithium to 2 was converted into tagetones (10). Keywords --- allylsilane; β-trimethylsylilvinyl sulfone; destannylsulfonation; tributylstannylmethyl iodide; tagetone; Michael addition