Catalytic Regioselective γ-Methylenation of α,β-Unsaturated Aldehydes Using Formaldehyde via Vinylogous Aldol Condensation
作者:Mahesh S. Kutwal、Sachin Dev、Chandrakumar Appayee
DOI:10.1021/acs.orglett.8b04110
日期:2019.4.19
first vinylogous aldol condensation of α,β-unsaturated aldehydes using aqueous formaldehyde is developed under mild reaction conditions to form the γ-methylenated products with excellent regioselectivity. Using this methodology, a short synthesis of α-triticene, an antifungal compound, is achieved in two steps. The practicality of this methodology is demonstrated by the gram-scale synthesis. Formation of