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    • 6. 发明授权
    • Two-step method of making copolymerizable, ultraviolet light absorber
_2-cyano-3,3-diphenylacryloxy) alkylene acrylic acid esters
    • 制备可共聚紫外线吸收剂_2-氰基-3,3-二苯基丙烯酰氧基)亚烷基丙烯酸酯的两步法
    • US4218392A
    • 1980-08-19
    • US39561
    • 1979-05-16
    • Donald H. LorenzBruce A. Gruber
    • Donald H. LorenzBruce A. Gruber
    • C07C255/34C08F20/36C07C121/70
    • C07C255/00C08F20/36
    • This invention relates to a method of making in high yield light absorber compounds which are (2-cyano-3,3-diphenylacryloxy) alkylene acrylic acid esters having the formula: ##STR1## where (Ar).sub.1 and (Ar).sub.2 are aromatic carbocyclic nuclei of the benzene and naphthalene series and are independently selected from phenyl or phenyl substituted with alkyl, halo, alkoxy, carboxy, carbalkoxy, cyano, acetyl, benzoyl, phenyl, alkyl phenyl, phenoxy phenyl, alkyl substituted phenoxy, or alkoxy phenyl substituted phenyl and naphthyl;X is alkylene, C.sub.2 -C.sub.17, unsubstituted or substituted with halo, cyano, alkyl C.sub.1 -C.sub.6 alkoxy C.sub.1 -C.sub.6, alkoxyalkyl C.sub.1 -C.sub.6, or alkoxyalkyleneoxy C.sub.1 -C.sub.6 ; andY is copolymerizable radical selected from acryloyl C.sub.3 -C.sub.12 alkylacryloyl C.sub.3 -C.sub.12, acryloxyalkyl C.sub.3 -C.sub.12, acryloxyhydroxyalkyl and alkylacryloxyhydroxyalkyl C.sub.3 -C.sub.12.The method comprises:(a) esterifying a hydroxyalkylene cyanoacetate with an acryloylhalide or acrylic acid to form a (2-acryloxyalkyl) 2-cyanoacetate intermediate, and,(b) condensing the intermediate directly with a benzophenone to provide the desired product.
    • 本发明涉及制备具有下式的(2-氰基-3,3-二苯基丙烯酰氧基)亚烷基丙烯酸酯的高收率光吸收剂化合物的方法,其中(Ar)1和(Ar)2是芳族的 苯和萘系列的碳环核独立地选自苯基或被烷基,卤素,烷氧基,羧基,烷氧基,氰基,乙酰基,苯甲酰基,苯基,烷基苯基,苯氧基苯基,烷基取代的苯氧基或烷氧基苯基取代的苯基 苯基和萘基; X是亚烷基,未被取代或被卤素,C 1 -C 6烷氧基,C 1 -C 6烷氧基烷基,C 1 -C 6烷氧基烷基或C 1 -C 6烷氧基烷氧基取代的亚烷基, Y为选自丙烯酰基C3-C12烷基丙烯酰基C3-C12,丙烯酰氧基烷基C3-C12,丙烯酰氧基羟基烷基和烷基丙烯酰氧基羟烷基C3-C12的共聚基。 该方法包括:(a)用丙烯酰卤或丙烯酸酯化氰基乙酸羟基亚烷基酯以形成(2-丙烯酰氧基烷基)2-氰基乙酸酯中间体,和(b)将中间体直接与二苯甲酮缩合以提供所需产物。