Efficient One-Pot Synthesis of Unsymmetrical Gold(I) N-Heterocyclic Carbene Complexes and Their Use as Catalysts
作者:A. Stephen K. Hashmi、Yang Yu、Frank Rominger
DOI:10.1021/om2008919
日期:2012.2.13
Eleven different gold(I) complexes of new NHC ligands were prepared in excellent yield, demonstrating the versatility of the new route to NHC complexes. While the influence of electronically different ligands on the synthesis of the catalysts was small, the catalytic activities of the products differed significantly.
The present invention relates to a process which comprises efficiently proceeding a hydration reaction of an alkyne in aspects of turnover numbers of a catalyst, yield and speed to thereby industrially and advantageously produce the corresponding carbonyl compound. The present invention provides a process for producing a carbonyl compound, which comprises reacting an alkyne compound with water in the presence of a gold catalyst which is an organogold complex compound and acid in an organic solvent.
Addition of N-nucleophiles to gold(<scp>iii</scp>)-bound isocyanides leading to short-lived gold(<scp>iii</scp>) acyclic diaminocarbene complexes
作者:Tatyana B. Anisimova、Mikhail A. Kinzhalov、M. Fátima C. Guedes da Silva、Alexander S. Novikov、Vadim Yu. Kukushkin、Armando J. L. Pombeiro、Konstantin V. Luzyanin
DOI:10.1039/c7nj00529f
日期:——
of [AuCl3(CNR1)] (R1 = Xyl, Cy, (S)-CHMePh) with amines unexpectedly proceeds via the redox pathway giving gold(I)–isocyanides and imines, while the addition of benzophenone hydrazone to the isocyanide ligand in [AuCl3(CNR1)] at RT leads to short-lived gold(III) acyclic diaminocarbene complexes [AuCl3C(NHNCPh2)NHR1}].
Authors thank the Ministerio de Economia y Competitividad (MINECO‐FEDER CTQ2016–75816‐C2–1‐P) and Gobierno de Aragon‐Fondo Social Europeo (E07_17R) for financial support.
作者感谢Ministryio de EConomia y Competitividad (MINECO-FEDER CTQ2016-75816-C2-1-P) 和Gobierno de Aragon-Fondo Social Europeo (E07_17R) 的财政支持。
Preparation and Crystal Structure of Bis(isocyanide)gold(I) Bis(phenylene-1,2-dithiolato)aurates(III)
of (isocyanide)gold(I) chlorides [(RNC)AuCl, R = tBu, cHex] with phenylene- 1,2-dithiol and sodium methoxide (molar ratio 2:1:2) in methanol / dichloromethane leads to the formation of deep green mixed-valent salts [(RNC)2Au]+[Au(S2C6H4)2]- in ca. 35% yield. As determined by single crystal X-ray diffraction methods, the two compounds have entirely different supramolecular structures. For R = tBu stacked
(异氰化物)金(I)氯化物 [(RNC)AuCl, R = tBu, cHex] 与亚苯基-1,2-二硫醇和甲醇钠(摩尔比 2:1:2)在甲醇/二氯甲烷中的反应导致深绿色混合价盐 [(RNC)2Au]+[Au(S2C6H4)2]- 的形成。35% 的收率。通过单晶 X 射线衍射方法确定,这两种化合物具有完全不同的超分子结构。对于 R = tBu,堆叠的平面阴离子和棒状阳离子形成交替层,而对于 R = cHex,交替的阳离子和阴离子排列在具有长 S--Au 触点 [3.422 Å] 的链中。