Reference

2,3,7,8,12,13,17,18-Octafluoro-5,10,15,20-tetraarylporphyrins and Their Zinc Complexes: First Spectroscopic, Electrochemical, and Structural Characterization of a Perfluorinated Tetraarylmetalloporphyrin

2,3,7,8,12,13,17,18-Octafluoro-5,10,15,20-tetraarylporphyrins and Their Zinc Complexes: First Spectroscopic, Electrochemical, and Structural Characterization of a Perfluorinated Tetraarylmetalloporphyrin. Woller, Eric K.; DiMagno, Stephen G. (Department of Chemistry, University of Nebraska, Lincoln, NE 68588-0304, USA). Journal of Organic Chemistry, 62(6), 1588-1593 (English) 1997 American Chemical Society. CODEN: JOCEAH. ISSN: 0022-3263. DOCUMENT TYPE: Journal CA Section: 26 (Biomolecules and Their Synthetic Analogs) Section cross-reference(s): 75, 78 A convenient and general synthesis of b-octafluoroporphyrins I [R = Ph, C6F5, 3-MeOC6H4] is reported. The structural, spectroscopic, and electrochem. data indicate that b-octafluoro-meso-tetraarylporphyrins are a new class of planar, electron-deficient ligands. Particularly impressive is the 0.5 V window over which the formal oxidn. potential can be tuned using only aryl substituents. The invariance of the ligand structure with increasingly pos.In this experiment, several chemicals are used like 591-31-1 and 917-23-7 formal oxidn. potential is a key advance; electronic effects have been severed from the nonplanar conformations exhibited by all other highly electron-deficient porphyrins. .

Preparation of some choleretic drugs by modified Reformatskii reaction

Preparation of some choleretic drugs by modified Reformatskii reaction. Direct synthesis of b-hydroxy acids. Pavlov, Slavka; Bogavac, Milica; Arsenijevic, Lucija; Klajn, Eugen; Arsenijevic, Vladimir (Fac. Pharm., Univ. Belgrade, Belgrade, Yugoslavia). Acta Pharm.Several reagents with their cas registry numbers 92-91-1 and 591-31-1 are used here. Jugosl., 36(1), 47-51 (English) 1986. CODEN: APJUA8. ISSN: 0001-6667. DOCUMENT TYPE: Journal CA Section: 25 (Benzene, Its Derivatives, and Condensed Benzenoid Compounds) Section cross-reference(s): 63 b-Hydroxy acids, some exhibiting choleretic activity (Cyclobutyrol and Fencibutyrol), are obtained by reaction of equiv. amts. of EtMgX (X = halide) and a-bromo acids in THF. In the presence Zn the salts obtained react in the same way as in the classical Reformatskii reaction. Most yields are better than those obtained previously. .