| 摘要 |
1,139,997. 2 - Methylol -1,2,6 - hexane triol. UGINE KUHLMANN. 15 Sept., 1967 [16 Sept., 1966], No. 42146/67. Heading C2C. [Also in Division C5] The novel alcohol 2-methylol-1,2,6-hexane triol is prepared by simultaneous catalytic hydrogenation and hydrolysis of 1-methylol-6,8- dioxa-(3,2,1)-bicyclo-octane, preferably in an inert solvent. The 1 - methylol - 6,8 - dioxa - (3,2,1) - bicyclooctane may be prepared in situ in the solvent by the acid catalysed isomerization of 2,2- dimethylol - 3,4 - dihydro - (2H) - pyrane, in which case 2,2-dimethylol tetrahydropyrane is also obtained, as a by-product resulting from the hydrogenation of the said 3,4-dihydropyrane. |
