(L1 and L2), was developed for the synthesis of both enantiomers of trifluoromethylated propargylic tertiary alcohols in high yield and enantioselectivity. Small amounts of BaF2 were found to be essential for maintaining high levels of reactivity and enantioselectivity.
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金属转移能力:利用手性
金鸡纳
生物碱作为
配体(L1和
L2),
钛(IV)催化的标题反应被开发用于高收率和对映选择性地合成三
氟甲基化炔丙基叔醇的两种对映体。发现少量的BaF 2对于维持高
水平的反应性和对映选择性是必不可少的。