Detail of "16883-69-5"

Reference

The synthesis and NMR study of 2,4-diaryl-6-(fluoren-2-yl)pyridines

The synthesis and NMR study of 2,4-diaryl-6-(fluoren-2-yl)pyridines. Hrabal, Richard; Lhotak, Pavel; Kurfurst, Antonin (NMR Lab., Prague Inst.In this study， 16883-69-5 and 140651-28-1 are also used. Chem. Technol., Prague 166 28, Czech.). Collect. Czech. Chem. Commun., 57(2), 375-84 (English) 1992. CODEN: CCCCAK. ISSN: 0010-0765. DOCUMENT TYPE: Journal CA Section: 22 (Physical Organic Chemistry) The reaction of 2-cinnamoylfluorene (I) with quaternary pyridinium salts (II and III) in the presence of ammonium acetate gave 2-fluorenyl-2,6-diarylpyridines (IV; R = Ph, biphenyl-4-yl). The complete assignment of 1H and 13C resonances by 2D NMR methods is given. .

Stereoselectivity of reactions of 1-phenacylpyridinium methylide with isothiocyanates: molecular and crystal structure of 2-benzoyl-2-(1-pyridinio)-1-phenylaminoethylene-1-thiolate

Stereoselectivity of reactions of 1-phenacylpyridinium methylide with isothiocyanates: molecular and crystal structure of 2-benzoyl-2-(1-pyridinio)-1-phenylaminoethylene-1-thiolate. Shestopalov, A. M.; Sharanin, Yu. A.; Litvinov, V. P.; Nesterov, V. N.; Demerkov, A. S.; Shklover, V. E.; Struchkov, Yu. T. (Inst. Org. Khim. im. Zelinskogo, Moscow, USSR). 17282-43-8 and 16883-69-5 are cas registry numbers of chemicals which are used as reagents here. Izv. Akad. Nauk SSSR, Ser. Khim., (3), 697-701 (Russian) 1991. CODEN: IASKA6. ISSN: 0002-3353. DOCUMENT TYPE: Journal CA Section: 27 (Heterocyclic Compounds (One Hetero Atom)) The reaction of 1-phenacylpyridinium ylide formed in situ from 1-phenacylpyridinium bromide, with RNCS (R = Ph, allyl) occurs stereospecifically to yield only the (Z)-isomer of thiolates I. The stereochem. of I was confirmed by x-ray crystallog. of I (R = Ph). .