Catalytic enantioselective Grignard Nozaki–Hiyama methallylation from the alcohol oxidation level: chloride compensates for π-complex instability
作者:Abbas Hassan、Ian A. Townsend、Michael J. Krische
DOI:10.1039/c1cc14392a
日期:——
Methallyl chloride serves as an efficient allyl donor in highly enantioselective Grignard Nozaki-Hiyama methallylations from the alcohol or aldehyde oxidation level via iridium catalyzed transfer hydrogenation. Under identical conditions, methallyl acetate does not react efficiently. Double methallylation of 1,3-propanediol provides the C(2)-symmetric adduct as a single enantiomer, as determined by
在通过铱催化转移氢化从醇或醛氧化水平进行高度对映选择性格利雅野崎-Hiyama 甲基烯丙基化反应中,甲基烯丙基氯可作为有效的烯丙基供体。在相同条件下,乙酸甲烯丙酯不能有效反应。1,3-丙二醇的双甲基化提供 C(2)-对称加合物作为单个对映异构体,如 HPLC 分析所确定的。