Tetrahedron Letters p. 253 - 256 (1994)
Update date:2022-08-04
Topics:
Guijarro, Albert
Vus, Miguel
The reaction of dichloromethane 1 with an excess of lithium powder (1:7 molar ratio) and catalytic amount of 4,4'-di-tert-butylbiphenyl (5 mol %) in the presence of a carbonyl compound 2 (1:2 molar ratio) in tetrahydrofuran at -40°C yields, after hydrolysis, the corresponding 1,3-diols 3 in moderate yields. The process can be also applied to more complicated gem-dichloro derivatives such as 7,7-dichlorobicyclo[4.1.0]heptane 6 or methyl dichloromethyl ether 9.
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