作者:Ned A. Porter、Vincent H. T. Chang、David R. Magnin、Bruce T. Wright
DOI:10.1021/ja00219a034
日期:1988.5
Etude de la macrocyclisation radicalaire d'halogenoalcenes et d'halogenocyclenes comportant ou non un groupe electro-attracteur sur la double liaison
大环化激进分子 d'halogenoalcenes et d'halogenocyclenes comportant ou non un groupeelectric-attracteur sur la double liaison 练习曲
Preparation of bis-alpha-keto-carboxylic acids
申请人:ETHYL CORPORATION
公开号:EP0142571A1
公开(公告)日:1985-05-29
@ A process for preparing bis-α-keto-carboxylic acids by reacting a dihaloalkane in a liquid solvent medium with carbon monoxide at elevated temperature and pressure in the presence of a catalytic amount of a metal carbonyl compound and an alkali or an alkaline earth metal inorganic base.
LIQUID-CRYSTAL COPOLYMER, PRODUCTION THEREOF, DIENE COMPOUND USED IN SAID PRODUCTION, AND PRODUCTION OF SAID COMPOUND
申请人:IDEMITSU KOSAN COMPANY LIMITED
公开号:EP0493601A1
公开(公告)日:1992-07-08
A liquid-crystal copolymer developing ferro-electricity near room temperature and rapidly responding to a change in outer electric field, which comprises repeating units of general formulae (I) and (II) in a molar ratio of around 1:1, wherein r and p each represents an integer of 2 to 5; q represents an integer of 0 to 3; m represents an integer of 1 to 20; R¹ represents (a); R² represents -COOR³, -OR³ or -OCOR³; R³ represents (b); R⁴ and R⁵ each represents - CH₃ or halogen; a and d each represents an integer of 0 to 10; and b is 0 or 1, provided that d is not 0 when R⁵ represents - CH₃.