Detail of "2160-89-6"

Reference

Fluorinated siloxane-acrylate copolymer for manufacturing contact lenses permeable to oxygen

Fluorinated siloxane-acrylate copolymer for manufacturing contact lenses permeable to oxygen. Morita, Naoki; Osawa, Nobuyuki (Asahi Chemical Industry Co., Ltd., Japan). Jpn. Kokai Tokkyo Koho JP 03257420 A2 15 Nov 1991 Heisei, 8 pp. (Japan). CODEN: JKXXAF. CLASS: ICM: G02C007-04. ICS: C08F299-08. 2160-89-6 and 79-41-4 are cas registry numbers of chemicals which are used as reagents here. APPLICATION: JP 90-55099 8 Mar 1990. DOCUMENT TYPE: Patent CA Section: 63 (Pharmaceuticals) Section cross-reference(s): 37 A contact lens material permeable to O is a copolymer of (1) bifunctional org. siloxane monomer H2C:CMeCO2(CH2)lSiR1R2O(SiMe2O)m SiR3R4(CH2)nO2CCMe:CH2 (R1-R4 = Me, Me3SiO; l, n = 2-5; m = 10-100) and fluorinated bifunctional organosiloxane in the mixing ratio of ()-(), and (2) fluoroalkyl acrylate where the ratio of (1):(2) is ()-(). Thus, a,w-bis(3-methacryloxypropyl)dimethylpolysiloxane 30, a,w-bis(3-methacryloxypropyldimethylsiloxy)-3,3,3-trifluoropropylmethyl polysiloxane 20, hexafluoroisopropyl acrylate 40, Bu acrylate 10, methacrylic acid 5, diethylene glycol dimethacrylate 5, and benzyl di-Me ketanol 0.5 part were mixed, poured into a mold, and irradiated with UV light to give a copolymer whose properties were studied. .

b-isocupreidine-catalyzed asymmetric Baylis-Hillman reactions

All Rights Reserved. b-isocupreidine-catalyzed asymmetric Baylis-Hillman reactions. Hatakeyama, Susumi (Grad. Sch. Biomed. Sci., Nagasaki Univ. 1-14 Bunkyo-Machi, Nagasaki 852-8521, Japan). Yuki Gosei Kagaku Kyokaishi, 64(11), 1132-1138 (English) 2006 Yuki Gosei Kagaku Kyokai. CODEN: YGKKAE. ISSN: 0037-9980. DOCUMENT TYPE: Journal; General Review CA Section: 22 (Physical Organic Chemistry) Section cross-reference(s): 67 A review. Highly enantioselective asym. Baylis-Hillman reactions employing (3R,8R,9S)-10,11-dihydro-3,9-epoxy-6' hydroxy-cinchonane, b-isocupreidine (b-ICD), as a chiral amine catalyst and 1,1,1,3,3,3-hexafluoroisopropyl acrylate (HFIPA) as an activated alkene are described for aldehydes including chiral N-Boc-a-amino aldehydes and arom. N-diphenylphosphinoyl imines. The key features of this b-ICD-HFIPA method and a plausible reaction mechanism governed by hydrogen bonding are presented.Except for chemicals metioned above, 14050-94-3 and 2160-89-6 are also used. .