The cycloaddition of the gem-dimethylcyclopropenic methyl ester 1 with the morpholinospiro [2,5] octene 2, followed by solvolytic ring cleavage of the 2-morpholinobicyclo [2.1.0] pentane adduct provides the key sequence for the synthesis of 2,3-dihydro Illudine M 18, closely related to the natural antitumoral and antibacterial Illudine M.
Diastereospecific synthesis of spiro[4.5]decan-2-ones as vetivane precursor via rhodium catalysed Claisen rearrangement / hydroacylation
作者:Tim Sattelkau、Peter Eilbracht
DOI:10.1016/s0040-4039(98)00197-x
日期:1998.4
The one-pot combination of Claisenrearrangement of allylvinylethers followed by an intramolecular hydroacylation catalysed by RhCl(cod)(dppe) is used as a key step in the synthesis of meso-dimethyl-1,4-dioxa-dispiro[4.2.4.2]tetradecan-10-one (12). The diastereospecific outcome of the reaction is discussed. This product is a potential precursor in the synthesis of solavetivone.