An Efficient and One-Pot Synthesis of 1,2-Dihydro-3H-Naphtho[2,1-b]Pyran-3-Ones
作者:Azam Abdolrazaghnezhad、Alireza Hassanabadi
DOI:10.3184/174751915x14360187398046
日期:2015.7
Three-component and one-pot, reaction between β-naphthol, Meldrum's acid and aryl aldehydes in the presence of piperidine affords 1-aryl-1,2-dihydro-3H-naphtho[2,1-b]pyran-3-ones in excellent yields.
bifunctional thiourea–tertiary amine as catalyst, domino Michael-type Friedel–Crafts alkylation/cyclization of β-naphthols with akylidene Meldrum’s acids was realized. The reactions afforded various enantioenriched β-arylsplitomicins with good yields (up to 99%) in moderate enantioselectivities (up to 79%).