Construction of Oxa-Bridged Tetracyclic Frameworks through a Prins Bicyclic Annulation
作者:Preethi N. Nair、Vangala Swathi、Ghaytadak Nishigandha、Balasubramanian Sridhar、Jithender G Reddy、Basi V. Subba Reddy
DOI:10.1002/ejoc.201801788
日期:2019.6.16
Aldehydes undergo smooth condensation with enediols in the presence of TMSOTf in dichloromethane to afford the corresponding hexahydro‐8a,4a‐(epoxyethano)pyrano[3,4‐f]isoindole‐1,3(2H,5H)‐dione derivatives in good yields.
在二氯甲烷中,在TMSOTf存在下,醛与烯二醇进行平滑缩合,得到相应的六氢-8a,4a-(环氧乙烷基)吡喃并[3,4- f ]异吲哚-1,3(2 H,5 H)-二酮衍生物良品率高。