反应详情

A mixture of 6.4 g. (0.021 mole) of (S)-(+)-3-tert. butoxy-2-methyl-1-propyl p-toluenesulfonate and 2.09 g. (0.043 mole) of sodium cyanide in 63 ml. of ethanol and 7 ml. of water was stirred and refluxed for 11 hours. After cooling, the reaction mixture was diluted with ice-water and worked up by extraction with CH2Cl2 in the manner of Example 1. The crude product (3.7 g.) was chromatographed on 125 g. of silica gel. Elution with 4:1 parts by volume hexane-ether gave 2.98 g. (91.7%) of R-(+)-4-tert.-butoxy-3-methylbutyronitrile as a colorless liquid.

1. additionA mixture of 6.4 g
2. temperaturerefluxed for 11 hours
3. temperatureAfter cooling
4. extractionworked up by extraction with CH2Cl2 in the manner of Example 1
5. customThe crude product (3.7 g.) was chromatographed on 125 g
6. washElution with 4:1 parts by volume hexane-ether
7. customgave 2.98 g