| 摘要 |
1,252,427. Cycloaliphatic di (aminoalkanes). NATIONAL DISTILLERS & CHEMICAL CORP. 1 Nov., 1968 [28 Dec., 1967], No. 51988/68. Heading C2C. [Also in Division C3] The invention comprises compounds of the Formula I wherein X and Y which can be the same or different represent a hydrogen or halogen atom or an alkyl C 1-12 , alkenyl C 1-12 , alkoxy C 1-12 or aryl C 6-12 radical, n 1 is 1 or 2 and n 2 is 0, 1, 2 or 3 and Y is present only when n 2 is zero and wherein two adjacent X groups can be taken together to form an alkylene C 3-6 radical or an oxyalkyl C 2-5 radical having one or two ether oxygens or an ester C 3-6 group. They may be prepared by hydrogenating a ring unsaturated dinitrile in the presence of a hydrogenation catalyst and liquid ammonia. The hydrogenation may be in two stages with cobalt and nickel catalysts preferred in the hydrogenation of the nitrile groups and a palladium or platinum catalyst for the hydrogenation of the double bond. Specified compounds include 1-aminomethyl - 1 - (3 - aminopropyl)cyclohexane, 1- aminomethyl - 1 - (3 - aminopropyl) - 2 - methoxycyclohexane, bicyclo[2.2.1]-2-aminomethyl- 2 - (3 - aminopropyl) - heptane, 3 - oxatricyclo [3.4.0.1<SP>1,7</SP>] - 8 - aminomethyl - 8 - (3 - aminopropyl) - decane and 1 - aminomethyl - 1 - (3- aminopropyl) - 2,3,4,5 - tetrachlorocyclohexane. 1 - Cyano - 1 - (2 - cyanoethyl)cyclohexane is prepared by hydrogenating the corresponding cyclohexene-3. 1 - Cyano - 1 - (2 - cyanoethyl) - 2 - ethyl - 3 - npropyl cyclohexene-4 is prepared by a Diels-Alder reaction between 2-methylene glutaronitrile and 3-n-propyl hexadiene-1,3. Bicyclo[2.2.1] - 2 - cyano - 2 - (2 - cyanoethyl) heptene-5 is prepared by a Diels-Alder reaction between 2-methylene glutaronitrile and cyclopentadiene. The compounds of Formula I may be phosgenated to yield the corresponding diisocyanates, the preparation of 1 -isocyanatomethyl- 1 - (3- isocyanatopropyl) -cyclohexane being described. |
