Catalytic TMSCl promoted powerful aldol addition and Claisen condensation mediated by TiCl4/Bu3N agent: comparison and evaluation with the Mukaiyama aldol addition
catalyst (0.05 equiv) signifiantly promoted the TiCl4/Bu3N-mediated direct cross aldol additions of sterically crowded ketones and α-hetero substituted ketones, and also the direct Claisencondensation between methyl esters.
MSCl催化剂(0.05当量)显着促进了空间拥挤的酮和α-杂取代的酮的TiCl 4 / Bu 3 N介导的直接交叉羟醛加成,以及甲酯之间的直接Claisen缩合。
Chakraborty, Shampa; Goswami, Shyamaprosad; Quah, Ching Kheng, Journal of the Indian Chemical Society, 2018, vol. 95, # 6, p. 623 - 627
benign method is advantageous from a green chemical viewpoint with regard to yield, substrates variation, reagent availability, and simple procedures. This method was applied to a short step formal synthesis of (R)-muscone, a natural macrocyclic musk.