Reactions of RMgX . THF complexes with 4-chloro-2-methyl-3-butyn-2-ol in aromatic hydrocarbons were studied. The complexes formed by arylmagnesium halides require the presence of anisole for the reaction to occur. 4-Chloro-2-methyl-3-butyn-2-ol can be synthesized by reaction of 2-methyl-3-butyn-2-ol with sodium hypochloride in the two-phase system water-benzene.
Calcium-Catalyzed Friedel-Crafts Alkylation at Room Temperature
作者:Meike Niggemann、Matthias J. Meel
DOI:10.1002/anie.200907227
日期:2010.5.10
A novel calcium catalyst was found to efficiently functionalize electron‐rich arenes with secondary and tertiary benzylic, propargylic, and allylic alcohols under very mild reaction conditions. The new catalyst system significantly enlarges the scope of the reaction, which was previously limited except for the few examples with secondary benzylicalcohols.
Brønsted Acid Catalyzed Alkylation of Indoles with Tertiary Propargylic Alcohols: Scope and Limitations
作者:Roberto Sanz、Delia Miguel、Alberto Martínez、Mukut Gohain、Patricia García-García、Manuel A. Fernández-Rodríguez、Estela Álvarez、Félix Rodríguez
DOI:10.1002/ejoc.201001055
日期:2010.12
Junta de Castilla y Leon (BU021A09 and GR-172) and the Ministerio de Educacion y Ciencia (MEC) and FEDER (CTQ2007-61436/BQU and CTQ2009-09949/BQU) for financial support. D. M. and A. M. thank the MEC for MEC-FPU predoctoral fellowships. M. G. thanks the MEC for a "Young Foreign Researchers" contract (SB2006-0215). M. A. F.-R. and P. G.-G. also thank the MEC for "Ramon y Cajal" and "Juan de la Cierva"
Junta de Castilla y Leon (BU021A09 和 GR-172) 以及教育部长 (MEC) 和 FEDER (CTQ2007-61436/BQU 和 CTQ2009-09949/BQU) 提供财政支持。DM 和 AM 感谢 MEC 提供 MEC-FPU 博士前奖学金。MG 感谢 MEC 的“外国青年研究人员”合同 (SB2006-0215)。MAF-R。和PG-G。还要感谢 MEC 的“Ramon y Cajal”和“Juan de la Cierva”合同。
Concise One-step Synthesis of 4-Arylidene-1,3-oxazolidin-2-ones with Internal Propargylic Alcohols and Isocyanates
作者:Won-Sun Kim、Eun-Young Yoon、Kyoung-A Jo、Eun-Joo Kang
DOI:10.5012/bkcs.2011.32.8.3158
日期:2011.8.20
transition metal catalyst, in which a variety of substituted oxazolidinones are obtained under milder conditions. Tamaru, Gagosz, and Schmalz reported the synthesis of 4-alkylidene1,3-oxazolidin-2-one from O-propargyl carbamates using Cu(I) and Au(I) catalyst, whereas Chandrasekaran reported LiOH-catalyzed reaction method with DMF solvent. However, these procedures were mostly applied to the construction
Visible-light promoted intramolecular carboamination of alkynes for the synthesis of oxazolidinone-fused isoquinolinones
作者:Qihang Guo、Dongpo Lu、Yihui Mao、Zhan Lu
DOI:10.1039/d2cc06542h
日期:——
An efficient method for the synthesis of isoquinolinone derivatives via photopromoted carboamination of alkynes is developed. Starting from the readily available propargyl alcohol derivatives, the polycyclic isoquinolinone derivatives could be obtained with good aryl and heterocycle tolerance. Both terminal and alkyl substituted alkynes could be employed. This protocol is operationally easy, and easily
Nickel-Catalyzed Reductive Cross-Coupling of Propargylic Acetates with Chloro(vinyl)silanes: Access to Silylallenes
作者:Chong-Hui Xu、Zhi-Qiang Xiong、Jing-Hao Qin、Xin-Hua Xu、Jin-Heng Li
DOI:10.1021/acs.joc.3c02228
日期:2024.3.1
achieve. Herein, nickel-catalyzed reductive cross-coupling reactions between propargyl acetates and substituted vinyl chlorosilanes for the synthesis of tetrasubstituted silylallenes are described. Therein, metallic zinc is a crucial reductant that effectively enables two electrophilic reagents to selectively construct C(sp2)–Si bonds. Additionally, a Ni-catalyzed reductive mechanism involving a radical