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Metal‐Carbene‐Templated Photochemistry in Solution: A Universal Route towards Cyclobutane Derivatives
Chinese Journal of Chemistry ( IF 5.5 ) Pub Date : 2019-10-04 , DOI: 10.1002/cjoc.201900348
Yang Li 1 , Guang‐Feng Jin 1 , Yuan‐Yuan An 1 , Rajorshi Das 1 , Ying‐Feng Han 1
Affiliation  

A series of dicarbene‐bridged metallacycles [Ag2(1)2](PF6)2, [Ag2(2)2](BF4)2, [Ag2(3)2](PF6)2, [Ag2(7)2](BF4)2, [Ag2(8)2](BF4)2 and [Ag2(11)2](PF6)2 were obtained in high yields via the reactions of 1,2,4‐triazole‐, 1,2,3‐triazole‐ and imidazo[1,5‐a]pyridine‐based ligands with Ag2O in CH3CN. The C=C double bonds in all of the newly synthesized metallacycles went through [2 + 2] photodimerization under UV irradiation condition (λ = 365 nm, T = 298 K) yielding the dinuclear rctt‐cyclobutane‐silver(I) complexes [Ag2(4)](PF6)2, [Ag2(5)](BF4)2, [Ag2(6)](PF6)2, [Ag2(9)](BF4)2, [Ag2(10)](BF4)2 and [Ag2(12)](PF6)2, respectively with quantitative yields. Treatment of the these cyclobutane‐bridged silver(I) complexes with NH4Cl resulted in the exclusive formation of cyclobutane derivatives after removal of the silver(I) metal ions.

中文翻译:

溶液中的金属-碳-模板光化学:通向环丁烷衍生物的通用路线

一系列的二碳烯桥连的金属环[Ag 212 ] [PF 62,[Ag 222 ] [BF 42,[Ag 232 ] [PF 62,[ Ag 272 ](BF 42,[Ag 282 ](BF 42和[Ag 2112 ](PF 62是通过1,2,4-三唑,1,2,3-三唑和咪唑并[1,5 - a ]吡啶基配体与Ag 2 O反应获得的在CH 3 CN中 在紫外线照射条件下(λ  = 365 nm,T  = 298 K),所有新合成的金属环中的C = C双键都经历了[2 + 2]光二聚化,生成了双核rctt-丁烷-银(I)络合物[Ag 24)](PF 62,[Ag 25)](BF 42,[Ag26)](PF 62,[Ag 29)](BF 42,[Ag 210)](BF 42和[Ag 212)](PF 62,分别以定量的产量。用NH 4 Cl处理这些环丁烷桥联的银(I)配合物导致去除银(I)金属离子后独家形成环丁烷衍生物。
更新日期:2019-10-10
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