Reactions of Grignard Reagents with Substituted 5-Acyl-1,3-dioxanes

A series of tertiary alcohols was synthesized by reacting 1-(5-isopropyl-1,3-dioxan-5-yl)ethan-1-one with Grignard reagents (EtMgBr, EtMgI, AllylMgBr, AllylMgI, BnMgBr, BnMgI). The basic regularities of the reaction were established, and the optimal conditions for achieving the maximum yield of reaction products were determined. Structure of the synthesized compounds was established using spectroscopy methods (IR, 1H, ¹³C NMR, COSY, HSQC, HMBC, DEPT) and high-resolution GCMS (HRMS).