Detail of "6627-89-0"

Reference

Process for the preparation of acrylates

Process for the preparation of acrylates. Ambler, Philip William; Stewart, Nevin John; Hodgson, Philip Kenneth Gordon (British Petroleum Co. PLC, UK). Eur. Pat. Appl. EP 468643 A1 29 Jan 1992, 6 pp.Some commonly used reagents like 141-43-5 and 6627-89-0 are used in this experiment. DESIGNATED STATES: R: BE, DE, ES, FR, GB, IT, NL. (European Patent Organization). CODEN: EPXXDW. CLASS: ICM: C07C271-16. ICS: C07C269-06. APPLICATION: EP 91-305784 26 Jun 1991. PRIORITY: GB 90-16062 21 Jul 1990. DOCUMENT TYPE: Patent CA Section: 23 (Aliphatic Compounds) CH2:CRCO2(CH2)nNHCO2CR1R2R3 (I; R = H, Me; R1 = alkyl having an a-H atom; R2, R3 = alkyl, alkenyl, cycloalkyl, Ph, etc.; n = 2-6) were prepd. by reaction of Me or Et (meth)acrylate with HO(CH2)nNHCO2CR1R2R3. Thus, Me methacrylate and HOCH2CH2NHCO2CMe3 reacted in the presence of 1,5,7-triazabicyclo[4.4.0]dec-5-ene to give I (R = R1 = R2 = R3 = Me, n = 2). .

Preparation of carbonates as protecting agents for a hydroxy group

Preparation of carbonates as protecting agents for a hydroxy group. Iwasaki, Fumiaki; Mitsuharu, Michiko (Tokuyama Corp, Japan). Jpn. Kokai Tokkyo Koho JP 09020728 A2 21 Jan 1997 Heisei, 11 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: ICM: C07C069-96. ICS: B01J031-02; C07C068-06; C07C231-12; C07C235-28; C07B061-00. APPLICATION: JP 1995-173232 10 Jul 1995. DOCUMENT TYPE: Patent CA Section: 23 (Aliphatic Compounds) R1O2COCR2:CHCOR3 [R1 = alkyl, (un)substituted aryl, alkenyl, (un)substituted aralkyl; R2 = alkyl; R3 = alkyl, alkoxy, (un)substituted aryl(oxy), (un)substituted aralkyl(oxy), (un)substituted amino; R2R3 may link to form a ring] are prepd. by treatment of R2COCH2COR3 (R2, R3 = same as above) with (R1O2C)2O (R1 = same as above) in the presence of bases. 2,4-Pentanedione was treated with (Me3CO2C)2O and 4-N,N-dimethylaminopyridine (I) in CH2Cl2 at room temp. for 3 h to give 85% Me3CO2COCMe:CHCOMe (II). Phenethyl alc. was treated with I and II in CH2Cl2 at 40° for 10 h to give 92.0% O-tert-butoxycarbonylphenethyl alc. and no di(phenylethyl) carbonate. 6627-89-0 and 108-93-0 are just another two chemicals used in this study. .