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Communication | Regular issue | Vol 4, No. 11, 1976, pp.1755-1758
Published online, 1st January, 1970
DOI: 10.3987/R-1976-11-1755
2-Hydroxynethyl-3,4,5,6,7,8-hexahydro-2H-1-benzopyran-5-ones. An Unusual Case of Methylene Transfer Reaction from Sulfur Ylides

Pierfrancesco Bravo,* Calimero Ticozzi, and Domenico Maggi

*CNR, Centro Studio Sostanze Organiche Naturali, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy


Reaction of dimethylsulfonium and -sulfoxonium methylides with 2-(3’-oxaalkyl)-1,3-cyclohexanediones (VII) or with 2-hydroxy-3,4,5,6,7,8-hexahydro-2H-1-benzopyran-5-ones (VIII) gives the 2-hydroxymethyl-3,4,5,6,7,8-hexahydro-2H-1-benzopyran-5-ones (XII).