Liquid-phaseoxidation of alkylaromatics with molecular O2 was examined using a microporous Mn-based metal–organic framework (Mn-MOF-74). Mn-MOF-74 consisting of trimeric Mn clusters and 2,5-dihydroxyterephthalate (dhtp) linkers exhibits superior catalytic activity with good ketone selectivity compared to conventional oxide-supported Mn catalysts without showing any lengthy induction period. Combined
Photoinduced Borylation of the Inert C(sp<sup>3</sup>)–O Bond of Alkyl Heteroaryl Ethers
作者:Hua Wang、Jing-Feng Zhao、Xing-Li Zhu、Qin-Qin Tian、Wei He
DOI:10.1021/acs.orglett.3c02038
日期:2023.9.8
4-dimethylaminopyridine (DMAP) and bis(catecholato)diborane(B2cat2) was developed. Despite the high reducing power, various substrates with liable functional groups were well-tolerated as well as ethers derived from natural products and medicinal-relevant compounds. Mechanistic investigation implied that an intra-single electron transfer process in an electron donor–acceptorcomplex formed from ethers with the
开发了在 4-二甲基氨基吡啶 (DMAP) 和双(儿茶酚)二硼烷 (B 2 cat 2 )存在下,具有非常负还原电位的烷基杂芳基醚的光诱导还原 C 烷基 -O 硼基化。尽管还原能力很高,但各种具有可靠官能团的底物以及源自天然产物和医药相关化合物的醚都具有良好的耐受性。机理研究表明,由醚与 B 2 cat 2和 DMAP 加合物形成的电子供体-受体复合物中应该涉及单内电子转移过程。
Luminescent tungsten(<scp>vi</scp>) complexes as photocatalysts for light-driven C–C and C–B bond formation reactions
作者:Daohong Yu、Wai-Pong To、Glenna So Ming Tong、Liang-Liang Wu、Kaai-Tung Chan、Lili Du、David Lee Phillips、Yungen Liu、Chi-Ming Che
DOI:10.1039/d0sc01340d
日期:——
gram-scale is described. This complex could catalyse photochemical organic transformation reactions including borylation of aryl halides, such as aryl chloride, reductive coupling of benzyl bromides for C–C bond formation, reductive coupling of phenacyl bromides, and decarboxylative coupling of redox-active esters of alkyl carboxylic acid with high product yields and broad functional group tolerance.
光催化在实际合成应用中的实现取决于开发可大规模制备的廉价光催化剂。本文描述了一种空气稳定、吸收可见光的光致发光钨 ( VI ) 配合物,可以方便地以克级制备。该配合物可催化光化学有机转化反应,包括芳基卤化物(如芳基氯)的硼化反应、苄基溴还原偶联以形成 C-C 键、苯酰溴的还原偶联以及烷基羧酸的氧化还原活性酯与高产率和广泛的官能团耐受性。