Reference

Condensation products of 3-aminothiophenes with acid anhydrides

Condensation products of 3-aminothiophenes with acid anhydrides. Alkhathlan, Hamad Z. (Department of Chemistry, King Saud University, Riyadh 11451, Saudi Arabia). Asian Journal of Chemistry, 14(3-4), 1427-1435 (English) 2002 Asian Journal of Chemistry. CODEN: AJCHEW. ISSN: 0970-7077. 117-08-8 which is the cas registry number is also used here. DOCUMENT TYPE: Journal CA Section: 27 (Heterocyclic Compounds (One Hetero Atom)) Condensation of substituted 3-aminothiophenes with six different carboxylic acid anhydrides resulted in the formation of three types of products: N-(substituted thienyl) imides, substituted carboxylic acids and fused thieno[3,2-b]pyridines. Anhydrides included 5-nitro-1,3-isobenzofurandione, tetrachlorophthalic anhydride, 4,5,6,7-tetrahydro-1,3-isobenzofurandione, (3aR,7aS)-rel-3a,4,7,7a-tetrahydro-1,3-Isobenzofurandione and furo[3,4-c]pyridine-1,3-dione. Aminothiophene derivs. included 1-(3-amino-2-thienyl)ethanone, 1-(3-amino-5-phenyl-2-thienyl)ethanone, 1-[3-amino-5-(4-chlorophenyl)-2-thienyl]ethanone, and 1-[3-amino-5-(1,1-dimethylethyl)-2-thienyl]ethanone. The IR, NMR and MS spectra of these compds. are discussed. .

Mechanistic aspects of the polymerization of epoxide, lactones, and carbon dioxide-epoxide with metalloporphyrins as a novel-catalyst

Mechanistic aspects of the polymerization of epoxide, lactones, and carbon dioxide-epoxide with metalloporphyrins as a novel-catalyst. Inoue, Shohei (Fac. Eng., Univ. Tokyo, Tokyo 113, Japan). Polym. Prepr. (Am. Chem. Soc., Div. Polym. Chem.), 25(1), 225-6 (English) 1984. CODEN: ACPPAY. ISSN: 0032-3934. DOCUMENT TYPE: Journal CA Section: 35 (Chemistry of Synthetic High Polymers) Ring-opening polymn. 71-91-0 and 71102-37-9 are also in the experiment. of b-propiolactone [57-57-8] using 5,10,15,20-tetraphenylporphinatoaluminum chloride (I) [71102-37-9] as catalyst occurred exclusively at alkyl-O bond. The equimolar reaction product of 5,10,15,20-tetraphenylporphinatoethylaluminum [63256-30-4] and 3-chloropropionic acid [107-94-8] was a good initiator for the polymn. of b-lactone to give polymer with narrow-mol.-wt. distribution. Polymn. of phthalic anhydride [85-44-9] with propylene oxide [75-56-9] using I and Et4NBr [71-91-0] as catalysts occurred on both sides of the aluminoporphyrin plane. .