Regioselective Synthesis of Rare 3-Halomethylphenols Based on Formal [3+3] Cyclizations of 1,3-Bis(trimethylsilyloxy)-1,3-butadienes
作者:Peter Langer、Mathias Lubbe、Constantin Mamat
DOI:10.1055/s-2008-1077877
日期:——
The cyclization of 1,3-bis(trimethylsilyloxy)-1,3-butadienes with halo-substituted enones afforded 3-difluorochloromethyl-, 3-difluorobromomethyl-, 3-dichloromethyl-, and 3-trichloro-methylphenols with very good regioselectivity. The hydrolysis of the dichloromethyl group gave functionalized 3-formylphenols, which are not readily available by other methods.
1,3-双(trimethylsilyloxy)-1,3-丁二烯与卤取代烯酮的环化反应,得到了3-二氟氯甲基、3-二氟溴甲基、3-二氯甲基和3-三氯甲基酚,具有很好的区域选择性。对二氯甲基的水解生成了功能化的3-甲酰基酚,这些化合物通过其他方法不容易获得。