In the presence of chiral thiourethane ligands [Cu(MeCN)4]BF4 forms active catalysts for the conjugate addition of MeMgBr, ZnEt2 and AlR3 (R = Me, Et) to non-3-en-2-one, hept-3-en-2-one, and 5-methylhex-3-en-2-one. Enantioselectivities of up to 51% are realised for these difficult substrates; for cyclohex-2-enone an e.e. of 42% is attained.
                                    在手性
硫代
氨基
甲酸酯
配体的存在下[Cu(MeCN)4 ] BF 4形成活性催化剂,用于将MeMgBr,ZnEt 2和AlR 3(R = Me,Et)共轭加成到非3-en-2-one,庚-3-en-2-one和5-methylhex-3-en-2-one。这些难处理的底物的对映选择性高达51%。对于环己-2-烯酮,ee达到42%。