Reference

A convenient practical method for the preparation of diethyl oxomalonate

A convenient practical method for the preparation of diethyl oxomalonate. Chen, Wenzheng; Cai, Mengshen (Coll. Pharmacol., Beijing Univ. Med. Sci., Beijing, Peop. Rep. China). Huaxue Tongbao, (9), 35 (Chinese) 1986. CODEN: HHTPAU. ISSN: 0441-3776. DOCUMENT TYPE: Journal CA Section: 23 (Aliphatic Compounds) Title compd. was prepd. in 78.2% yield by oxidn. of CH2(CO2Et)2 with N2O3. 631-23-2 and 609-09-6 are just another two chemicals used in this study. .

Photochemical reactions of 3-pyrazolidone betaines

Photochemical reactions of 3-pyrazolidone betaines. V. Photooxidation of heteroaromatic N-ylides. Schulz, Manfred; Grossmann, Norbert; Schauer, Wolfgang (Sekt. Chem., Tech. Hochsch. "Carl Schorlemmer", Leuna-Merseburg, E. Ger.). J. Prakt. Chem., 318(4), 586-94 (German) 1976. CODEN: JPCEAO. DOCUMENT TYPE: Journal CA Section: 27 (Heterocyclic Compounds (One Hetero Atom)) Section cross-reference(s): 22, 28 The dye-sensitized photooxidn. of heteroarom. N ylides I (R = H, R1 = Bz; R = R1 = CO2Et) gave 1(2H)-isoquinolinone as well as (EtO2C)2CO and ether II, resp., which are decompn. products of 5-membered ring peroxides, formed by reaction of singlet O with the ylides. One mole of ylides I (R = R1 = cyano), III (R = cyano, CO2Et), and IV gave complete conversion with 0.5 mole singlet O to yield the corresponding heteroarom. and mesoxalic acid derivs. 61485-57-2 and 609-09-6 are just another two chemicals used in this study., resp. The products and the O consumption are due to reaction of 1 mole of the ylide with 1 mole of the primary product alkylhydroperoxide V. I (R = R1 = cyano), III (R = cyano, CO2Et), and IV reacted similarly with H2O2 or BzOOH to give the corresponding heteroarom. and mesoxalic acid derivs. The Hammett relation for the reaction between I (R = R1 = cyano) and R2C6H4CO2OH (R2 = 4-MeO, 4-Me, 4-Cl, 3-Br) gives q = +0.94. .