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Titolo:
Photoinduced group transfer radical addition of carbamotelluroates to acetylenes
Autore:
Fujiwara, S; Shimizu, Y; Shin-ike, T; Kambe, N;
Indirizzi:
Osaka Dent Univ, Dept Chem, Hirakata, Osaka 5731121, Japan Osaka Dent Univ Hirakata Osaka Japan 5731121 rakata, Osaka 5731121, Japan Osaka Univ, Fac Engn, Dept Appl Chem, Suita, Osaka 5650871, Japan Osaka Univ Suita Osaka Japan 5650871 pl Chem, Suita, Osaka 5650871, Japan
Titolo Testata:
ORGANIC LETTERS
fascicolo: 13, volume: 3, anno: 2001,
pagine: 2085 - 2088
SICI:
1523-7060(20010628)3:13<2085:PGTRAO>2.0.ZU;2-S
Fonte:
ISI
Lingua:
ENG
Soggetto:
LITHIUM-TELLURIUM EXCHANGE; CROSS-COUPLING REACTIONS; Z-VINYLIC TELLURIDES; ACYL RADICALS; CARBAMOYL RADICALS; STEREOSELECTIVE PREPARATION; ORGANOTELLURIUM COMPOUNDS; DIPHENYL DITELLURIDE; Z-ENYNES; GENERATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
72
Recensione:
Indirizzi per estratti:
Indirizzo: Fujiwara, S Osaka Dent Univ, Dept Chem, Hirakata, Osaka 5731121, Japan Osaka Dent Univ Hirakata Osaka Japan 5731121 a 5731121, Japan
Citazione:
S. Fujiwara et al., "Photoinduced group transfer radical addition of carbamotelluroates to acetylenes", ORG LETT, 3(13), 2001, pp. 2085-2088

Abstract

[GRAPHICS]Te-Phenyl carbamotelluroates 1 add to acetylenes under irradiation of visible light to yield beta -telluroacrylamides 2 regioselectively. This reaction would be initialed by homolytic cleavage of the carbamoyl carbon-tellurium bond, producing carbamoyl and PhTe radicals, The addition reaction proceeds via a radical chain mechanism comprising two processes: (i) addition ofcarbamoyl radicals at the terminal carbon of the triple bond, giving vinylic radicals, and (ii) S(H)2 reaction on the Te atom caused by the attack ofthe vinyl radicals to 1.

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Documento generato il 03/12/20 alle ore 06:05:55