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    • 2. 发明授权
    • Preparation of aryl chloroformates
    • 氯甲酸芳基酯的制备
    • US5274164A
    • 1993-12-28
    • US975693
    • 1992-11-13
    • Thomas WettlingJochem HenkelmannIrene Troetsch-SchallerHermann Koehler
    • Thomas WettlingJochem HenkelmannIrene Troetsch-SchallerHermann Koehler
    • C07C68/02C07C69/96
    • C07C68/02
    • A process for the preparation of aromatic aryl chloroformates of the general formula I ##STR1## in which Ar denotes an aryl radical optionally mono- to penta-substituted by C.sub.1 -C.sub.20 -alkyl, C.sub.2 -C.sub.20 -alkenyl, C.sub.3 -C.sub.8 -alkyl-cycloalkyl, C.sub.1 -C.sub.20 -haloalkyl, C.sub.1 -C.sub.20 -alkoxy, C.sub.1 -C.sub.20 -alkylthio, halo, cyano, C.sub.2 -C.sub.20 -alkylcarbonyloxy, C.sub.3 -C.sub.20 -carboalkoxy, formyl, C.sub.2 -C.sub.20 -dialkylamino, aryl, aryloxy, arylthio, aroyl, C.sub.7 -C.sub.20 -aralkyl, C.sub.7 -C.sub.20 -aralkoxy, arylsulfonyl and/or C.sub.7 -C.sub.20 -aralkylthio and/or optionally mono- or di-substituted by chloroformyl and/or nitro, from phosgene and phenols of the general formula IIAr--OH (II),in which Ar has the meanings stated above and optionally carries one or two hydroxy groups, wherein the reaction is carried out at a temperature of from 60.degree. to 180.degree. C. in the presence of an organic phosphorus compound of the general formula III ##STR2## in which at least one of the radicals R.sup.1, R.sup.2, and R.sup.3 stands, irrespective of the others, for --NR.sup.5 R.sup.6 or --O--R.sup.7 andR.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7 independently denote C.sub.1 -C.sub.20 -alkyl, C.sub.2 -C.sub.20 -alkenyl, halo, aryl, or C.sub.7 -C.sub.20 -aralkyl and R.sup.1 and R.sup.2, R.sup.1 and R.sup.3, R.sup.2 and R.sup.3, and R.sup.5 and R.sup.6 each denote a saturated or unsaturated C.sub.2 -C.sub.5 -alkylene chain,X denotes hydroxy, aryloxy, halo, or an inorganic or organic acid anion,R.sup.4 denotes hydrogen or C.sub.1 -C.sub.20 -alkyl or halo when X stands for halo, aryloxy, or aralkoxy,n is equal to 0 or 1, andR.sup.4 and X can together denote oxygen or sulfur.
    • 制备通式I(I)的芳族芳基氯甲酸酯的方法,其中Ar表示任选被C 1 -C 20 - 烷基,C 2 -C 20 - 烯基,C 3 -C 8单取代至五取代的芳基 - 烷基 - 环烷基,C 1 -C 20卤代烷基,C 1 -C 20 - 烷氧基,C 1 -C 20 - 烷硫基,卤素,氰基,C 2 -C 20烷基羰基氧基,C 3 -C 20 - 烷氧基,甲酰基,C 2 -C 20 - 二烷基氨基,芳基, ,芳基硫基,芳酰基,C 7 -C 20 - 芳烷基,C 7 -C 20 - 芳烷氧基,芳基磺酰基和/或C 7 -C 20 - 芳烷硫基,和/或任选被氯仿和/或硝基的一般或二取代的光气和酚 式II Ar-OH(II),其中Ar具有上述含义并任选地带有一个或两个羟基,其中反应在有机物存在下在60-180℃的温度下进行 磷化合物,其中R 1,R 2和R 3中的至少一个与-NR 5 R 6或-O-R 7和R 1,R 2,R 3,R 4不同,其中R 1,R 2和R 3中的至少一个表示 , R5,R6,R7独立地表示C1-C20烷基,C2-C20-烯基,卤素,芳基或C7-C20-芳烷基,R1和R2,R1和R3,R2和R3,以及R5和R6各自表示饱和 或不饱和C 2 -C 5亚烷基链,X表示羟基,芳氧基,卤素或无机或有机酸阴离子,当X代表卤素,芳氧基或芳烷氧基时,R 4表示氢或C 1 -C 20烷基或卤素,n相等 至0或1,R4和X可以一起表示氧或硫。