A remarkable ene-like reaction: Development and synthetic applications
摘要:
A catalytic ene-like reaction of aldehydes with those vinyl ethers that display the oxygen functionality at the central carbon of an allylic system, e.g., 2-methoxypropene, is discussed in detail. The reaction is promoted by 0.05 eguiv. of the 1:1 complex of Yb(fod)(3) and acetic acid, and it is forms the centerpiece of our synthesis of chlorovulone II, mitomycinoids and phyllanthocin. (C) 1997 Elsevier Science Ltd.
Yb(fod)3-promoted ene reaction of aldehydes with vinyl ethers
摘要:
Catalytic amounts of Yb(fod)3 catalyze a bimolecular ene-like reaction between ordinary aldehydes and vinyl ethers, in which the oxygen functionality is located at the central carbon of an allylic system, These reactions proceed at room temperature in high yield.