Preparation of beta-halogenoalkyl isocyanates
    3.
    发明授权
    Preparation of beta-halogenoalkyl isocyanates 失效
    β-甲醛烷基异氰酸酯的制备

    公开(公告)号:US3842109A

    公开(公告)日:1974-10-15

    申请号:US29880572

    申请日:1972-10-06

    Applicant: HOECHST AG

    Inventor: KAMPE K

    Abstract: 1. A PROCESS FOR THE PREPARATION OF A B-HALOALKYLISOCYANATE OF THE FORMULA X-C(-R3)(-R4)-C(-R1)(-R2)-N=C=O WHEREIN X IS CHLORINE OR BROMINE AND R1,R3 AND R4, TAKEN ALONE, ARE HYDROGEN, ALKYL OF 1 TO 13 CARBONA TOMS, ALKENYL OF 2 TO 13 CARBON ATOMS, CHLOROALKYL OF 1 TO 13 CARBON ATOMS, BROMOALKYL OF 1 TO 13 CARBON ATOMS, CYCLOALKYL OF 5 TO 6 CARBON ATOMS, OR PHENYL, AND WHEREIN R1, T2, R3 AND R4, TAKEN PAIRWISE ARE ALKYLENE OR ALKENYLENE OF 2 TO 6 CARBON ATOMS OR PART OF A BICYCLIC OR TRICYCLIC CARBOXYLIC SATURATED OR MONO-SATURATED RING SYSTEM OF UP TO 13 CARBON ATOMS, WHICH PROCESS COMPRISES CONTACTING, AT A TEMPERATURE OF ABOUT-30*C. TO ABOUT +250* C., A LACTAM OF THE FORMULA X-N

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