The synthesis and characterization of triorganotin(IV) derivatives of two 4-acylpyrazol-5-ones(4-acetyl-5-one (HPMAP) and 4-benzoyl-5-one (HPMBP)) and of four 1-acylpyrazol-5-ones (1-acetyl-5-one (APzH), 1-(4'-nitrobenzoyl)-5-one (NPzH) and 1-salicyloyl-5-one (SPzH)) as well as those of diorganotin(IV) derivatives of the three 1-acylpyrazol-5-ones are reported. The X-ray crystal structure of tributyl(4-benzoylpyrazol-5-onato)tin(IV) monohydrate is also described.
nickel-catalyzed carbonylative coupling of aryl iodides with Ph3SnCl or Ph3SnOEt for synthesis of unsymmetrical diaryl ketones under phosphine-free condition is reported. The reaction occurs efficiently in the presence of Cr(CO)6 as an easy handling solid source of carbon monoxide at atmospheric pressure and 100 °C in DMF under air to deliver the desired ketones in high yield.
JAIN R. R.; MAIRE J. C.; MAIRE-LIMOUZIN Y.; BALDY A.; BACHLAS B. P., INDIAN J. CHEM., 1980, A19, NO 5, 482-484
作者:JAIN R. R.、 MAIRE J. C.、 MAIRE-LIMOUZIN Y.、 BALDY A.、 BACHLAS B. P.
DOI:——
日期:——
Modeling the catalyst resting state in aryl tin(iv) polymerizations of lactide and estimating the relative rates of transamidation, transesterification and chain transferElectronic supplementary information (ESI) available: kinetic data of reactions C and E in Scheme 2. See http://www.rsc.org/suppdata/nj/b3/b306700a/
作者:Malcolm H. Chisholm、Ewan E. Delbridge、Judith C. Gallucci
DOI:10.1039/b306700a
日期:——
cyclic lactide oligomers (LA/2)n by intrachain transesterification, in contrast to polymerizations employing Ph2Sn(OPri)2, which produce long chains of H–(LA/2)n–OPri where LA=[OCHMeC(O)OCHMeC(O)]. The kinetics of the reactions between Ph3SnX and each of Me2CHC(O)OMe, Me(MeO)CHC(O)OEt and Ph3SnOCHMeC(O)OEt, have been determined from NMR studies in benzene-d6 where X=NMe2 or OPri. Similarly, the reaction
The synthesis and characterization of triorganotin(IV) derivatives of two 4-acylpyrazol-5-ones(4-acetyl-5-one (HPMAP) and 4-benzoyl-5-one (HPMBP)) and of four 1-acylpyrazol-5-ones (1-acetyl-5-one (APzH), 1-(4'-nitrobenzoyl)-5-one (NPzH) and 1-salicyloyl-5-one (SPzH)) as well as those of diorganotin(IV) derivatives of the three 1-acylpyrazol-5-ones are reported. The X-ray crystal structure of tributyl(4-benzoylpyrazol-5-onato)tin(IV) monohydrate is also described.