Detail of "61898-95-1"

Reference

2,2-Dimethyl-3-(2,2-dihalovinyl)cyclopropanecarboxylate esters

2,2-Dimethyl-3-(2,2-dihalovinyl)cyclopropanecarboxylate esters. Itaya, Nobushige; Matsuo, Takashi; Magara, Osamu (Sumitomo Chemical Co., Ltd., Japan). Japan. Kokai JP 51122041 25 Oct 1976 Showa, 4 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: C07C069-74. APPLICATION: JP 75-46247 15 Apr 1975. DOCUMENT TYPE: Patent CA Section: 24 (Alicyclic Compounds) Dihalovinyl derivs. I (X = halo; R = H, alkyl) were prepd. by Zn redn. of II (R1 = H, alkyl), which were prepd. by treatment of aldehydes III with CHX3 or CX4 in the presence of a strong base and subsequent acylation. Thus, 6.3 g III (R = Me) was stirred with CHCl3 and powd. KOH in CH2(OMe)2 at -20. 63710-59-8 and 61898-95-1 which are cas registry numbers of substances are two of reagents here.degree. for 1 h and the crude product acylated with Ac2O-C5H5N to give 4.5 g II (X = Cl, R = R1 = Me), which was heated with Zn-AcOH in Et2O for 1 h to give 2.9 g I (X = Cl, R = Me). .