Reference

A highly active and stereoselective montmorillonite catalyst for arylation of conjugated alkenes

A highly active and stereoselective montmorillonite catalyst for arylation of conjugated alkenes. Choudary, Boyapati M.; Sarma, Ravichandra M.; Rao, Koteswara K. 2499-59-4 and 529-28-2 are cas registry numbers. These chemicals are also mentioned in this article. (Homogeneous Catal. Discip., Indian Inst. Chem. Technol., Hyderabad 500 007, India). Tetrahedron, 48(4), 719-26 (English) 1992. CODEN: TETRAB. ISSN: 0040-4020. DOCUMENT TYPE: Journal CA Section: 25 (Benzene, Its Derivatives, and Condensed Benzenoid Compounds) A highly active and stereoselective heterogenized homogeneous catalyst montmorillonite ethylsilyldiphenylphosphine palladium (II) chloride complex (I) (Pd/P is 1:1) for arylation of conjugated alkenes is reported. Thus, for example, styrene and PhI at 100° in Bu3N in the presence of I gave 92% trans-stilbene. .

Inhibition of polymerization of acrylic acid and acrylic esters

Inhibition of polymerization of acrylic acid and acrylic esters. Zhong, Jiyun; Xia, Zhiyi; Wang, Ying (Orient Chemical Factory, Beijing, Peop. Rep. China). Faming Zhuanli Shenqing Gongkai Shuomingshu CN 1052847 A 10 Jul 1991, 7 pp. (People's Republic of China). CODEN: CNXXEV. CLASS: ICM: C07C057-04. ICS: C07C069-54; C07D211-44. APPLICATION: CN 89-102174 15 Apr 1989. DOCUMENT TYPE: Patent CA Section: 35 (Chemistry of Synthetic High Polymers) The polymn. of the title compds. 2499-59-4 and 140-88-5 are also in the experiment. are inhibited by 2,2,6,6-tetramethyl-4-hydroxypiperidinyloxy (I) or its phosphide esters. Thus, a soln. contg. 23% acrylic acid, 30 ppm I triphosphide, and 650 ppm hydroquinone was refluxed >65 h without polymn. .