作者:Christina Wartmann、Shiny Nandi、Jörg‐Martin Neudörfl、Albrecht Berkessel
DOI:10.1002/anie.202306584
日期:2023.8.28
A cis-1,2-diaminocyclohexane (cis-DACH) Ti salalen complex (R=NO2) was shown to efficiently catalyze enantioselective benzylic hydroxylations with H2O2 as oxidant. Tetralin and indane derivatives are converted to benzylic alcohols with up to 98 % ee. The overoxidation to ketone is negligible. Epoxidation reactions are similarly effective, with 1-decene being converted to its epoxide in 90 % yield and
顺式-1,2-二氨基环己烷(顺式-DACH)Ti salalen络合物(R=NO 2)被证明可以有效催化以H 2 O 2作为氧化剂的对映选择性苄基羟基化。四氢化萘和茚满衍生物转化为 ee 高达 98% 的苯甲醇。酮的过度氧化可以忽略不计。环氧化反应同样有效,在 0.1 mol% 催化剂负载量下,1-癸烯转化为其环氧化物,产率达 90%,ee 达 94%。