Synthesis and reactivity of para-substituted benzoylmethyltellurium(II and IV) compounds: observation of intermolecular C–H–O hydrogen bonding in the crystal structure of (p-MeOC6H4COCH2)2TeBr2
作者:Ashok K.S. Chauhan、Arun Kumar、Ramesh C. Srivastava、Jens Beckmann、Andrew Duthie、Ray J. Butcher
DOI:10.1016/j.jorganchem.2003.10.021
日期:2004.1
Bis(p-substituted benzoylmethyl)tellurium dibromides, (p-YC6H4COCH2)2TeBr2, (Y=H (1a), Me (1b), MeO (1c)) can be prepared either by direct insertion of elemental Te across CRf–Br bonds (where CRf refers to α-carbon of a functionalized organic moiety) or by the oxidative addition of bromine to (p-YC6H4COCH2)2Te (Y=H (2a), Me (2b), MeO (2c)). Bis(p-substituted benzoylmethyl)tellurium dichlorides, (p-YC6H4COCH2)2TeCl2
双(对位取代的苯甲酰基甲基)二溴化碲(p -YC 6 H 4 COCH 2)2 TeBr 2(Y = H(1a),Me(1b),MeO(1c))均可通过直接插入穿过C Rf -Br键的元素Te (其中C Rf指官能化有机部分的α-碳)或通过将溴氧化添加到(p -YC 6 H 4 COCH 2)2 Te(Y = H(2a) ,我(2b),我(2c))。双(对位取代的苯甲酰基甲基)二氯化碲(p -YC 6 H 4 COCH 2)2 TeCl 2(Y = H(3a),Me(3b),MeO(3c))是通过bis的反应制备的(p-取代的苯甲酰基甲基)碲化物2a - c与SO 2 Cl 2,而相应的二碘化物(p -YC 6 H 4 COCH 2)2 TeI 2(Y = H(4a),Me(4b),MeO(4c))可以通过1a - c与KI的复分解反应获得,或者通过将碘氧化添加到2a - c中获得。的反应2A