Palladium-mediated cyclization of 1,5-hexadien-3-ols to 1-methyl-1,3-cyclopentadienes
摘要:
Treatment of 1-allyl-2-alkenylidenecyclohexanols in acetic acid by the Pd(0) complex [Pd(Ph3P)4] led to 8-methyl bicyclo[4.3.0]nona-1(6),7-dienes. In contrast, only few examples of cyclization vs elimination were observed in acyclic 1,5-hexadien-3-ols.