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Preparation of N-(phenylcarbamoyl)-2-thiophenesulfonamides and analogs as antitumor agents: Preparation of N-(phenylcarbamoyl)-2-thiophenesulfonamides and analogs as antitumor agents. Howbert, James Jeffry; Mohanadi, Fariborz; Spees, Michael Marriott (Lilly, Eli, and Co., USA). Eur. Pat. Appl. EP 467613 A1 22 Jan 1992, 29 pp. DESIGNATED STATES: R: AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LI, LU, NL, SE. (European Patent Organization). CODEN: EPXXDW. CLASS: ICM: C07D207-36. 3437-95-4 and 81417-51-8 are cas registry numbers of chemicals which are used as reagents here. ICS: C07D307-64; C07D333-34; A61K031-34; A61K031-68; A61K031-40. APPLICATION: EP 91-306373 15 Jul 1991. PRIORITY: US 90-554226 17 Jul 1990. DOCUMENT TYPE: Patent CA Section: 27 (Heterocyclic Compounds (One Hetero Atom)) Section cross-reference(s): 1 3,4-X1X2C6H3NHCONHSO2A (I; A = heterocyclyl groups Q1, Q2; R1-R4 = H, halo, alkyl, alkoxy, alkylthio; 1 of X1, X2 = Cl, Br, F, or CF3 and the other = H, halo, CF3, Me; Z = O, NH, S) were prepd. Thus, 5-methoxy-2-thiophenesulfonamide (prepn. from 2-methoxythiophene given) was condensed with 4-ClC6H4NCO to give I (A = Q1, R1 = OMe, R2 = R3 = X1 = H, X2 = Cl) which gave 93% inhibition of 6C3HED lymphosarcoma tumor growth in mice at 150 mg/kg orally. .

Efficient coupling of heteroaryl halides with arylboronic acids in the presence of a palladium-tetraphosphine catalyst: Efficient coupling of heteroaryl halides with arylboronic acids in the presence of a palladium-tetraphosphine catalyst. Feuerstein, Marie; Doucet, Henri; Santelli, Maurice (Laboratoire de Synthese Organique Associe au CNRS, Faculte des Sciences de Saint Jerome, Marseille 13397, Fr.). Journal of Organometallic Chemistry, 687(2), 327-336 (English) 2003 Elsevier Science B.V. CODEN: JORCAI. ISSN: 0022-328X. 3437-95-4 and 10273-89-9 which are cas registry numbers of chemicals are mentioned. DOCUMENT TYPE: Journal CA Section: 28 (Heterocyclic Compounds (More Than One Hetero Atom)) Section cross-reference(s): 25, 27 The cis,cis,cis-1,2,3,4-tetrakis(diphenylphosphinomethyl)cyclopentane-[Pd Cl(C3H5)]2 system catalyzes the Suzuki cross-coupling of heteroaryl halides with a range of arylboronic acids with very high ratio substrate/catalyst in good yields. Substrates such as pyridines, quinolines, thiophenes, an indole, pyrimidines or a furane have been used successfully. .