15 research outputs found
Concerted [4+2] and stepwise [2+2]cycloadditions of the triphenylallenyl cation with cyclopentadiene
Carbocationic cyclisations and rearrangements in the damascone series
A regio- and stereoselective synthesis of the tertiary chloride 7 is described, involving the Lewis acid catalysed addition of the allyl chloride 6 to isobutene as a key step. Acid catalysed cyclisation of 7 yields the damasconoid compounds 12â15
Synthesis of Îł-lactones from alkenes employing p-methoxybenzyl chloride as +CH2---COâ2 equivalent
The ZnCl2 catalyzed reaction of p-methoxybenzyl chloride with alkenes yields the 1:1 addition products 3, which are converted into the Îł-lactones 4 via Ru(VIII) catalyzed oxidative degradation of the aromatic ring