作者:S. Lociuro、E. Vecchi、E. Zeuli、M. Delfini
DOI:10.1016/0040-4020(82)80116-6
日期:1982.1
Grignard reactions on methyl 4-methyl, 5-oxo, 5-phenyl (pX substituted) pentanoates 1-6 (X = H, Me, F, Cl, Br, OMe) produced mixtures of cis-(7-11) and trans-(12-16) tetrahydro 5,6 dimethyl-6-phenyl -2H-pyran-2-ones. They were isolated by HPLC and characterized by 1H and 13C techniques. The stereochemistry of Grignard reactions in THF with CH3MgCl was determined at 0° and 60°.
在4-甲基,5-氧代,5-苯基(pX取代的)戊酸酯1-6(X = H,Me,F,Cl,Br,OMe)上进行的格氏反应产生顺式-(7-11)和反式的混合物-(12-16)四氢5,6-二甲基-6-苯基-2H-吡喃-2-酮。通过HPLC分离它们,并通过1 H和13 C技术表征。在0°和60°下测定格利雅反应在THF中与CH 3 MgCl的立体化学。