Synthesis of Allylic Alcohols via Cu-Catalyzed Hydrocarbonylative Coupling of Alkynes with Alkyl Halides
作者:Li-Jie Cheng、Shahidul M. Islam、Neal P. Mankad
DOI:10.1021/jacs.7b12582
日期:2018.1.24
suggested a different pathway was operative with tertiary alkyl halides compared with primary and secondary alkyl halides for generating the key copper(III) oxidative adduct. For tertiary electrophiles, an acyl halide likely forms via radical atom transfer carbonylation. The preference for 1,2-reduction over 1,4-reduction of α,β-unsaturated ketonesbearing tertiary substituents was rationalized using density
Rhodium(II)‐Catalyzed Intramolecular Annulation of 1‐Sulfonyl‐1,2,3‐Triazoles with Pyrrole and Indole Rings: Facile Synthesis of N‐Bridgehead Azepine Skeletons
作者:Jin‐Ming Yang、Cheng‐Zhi Zhu、Xiang‐Ying Tang、Min Shi
DOI:10.1002/anie.201400881
日期:2014.5.12
method has been developed to construct highly functionalized N‐bridgeheadazepineskeletons, which are of great importance in biological and pharmaceutical industry. The reaction proceeds through a rhodium(II) azavinyl carbene intermediate, which initiated the intramolecular CH functionalization with pyrrolyl and indolyl rings. A variety of azepine derivatives were obtained in moderate to good yields under
A Dual CuH- and Pd-Catalyzed Stereoselective Synthesis of Highly Substituted 1,3-Dienes
作者:Chuan-Jin Hou、Alexander W. Schuppe、James Levi Knippel、Anton Z. Ni、Stephen L. Buchwald
DOI:10.1021/acs.orglett.1c03324
日期:2021.11.19
synthetic chemistry. Herein, we report a method for the stereoselective hydroalkenylation of alkynes, utilizing readily available enol triflates. We leveraged an in situ-generated and geometrically pure vinyl-Cu(I) species to form the Z,Z- or Z,E-1,3-dienes in excellent stereoselectivity and yield. This approach allowed for the synthesis of highly substituted Z-dienes, including pentasubstituted 1,3-dienes
共轭二烯是合成化学中的通用结构单元和普遍的子结构。在此,我们报告了一种利用容易获得的烯醇三氟甲磺酸酯对炔烃进行立体选择性加氢烯基化的方法。我们利用原位生成的几何纯乙烯基-Cu(I)物种以优异的立体选择性和产率形成Z , Z - 或Z , E -1,3-二烯。这种方法可以合成高度取代的Z-二烯,包括五取代的1,3-二烯,这些物质很难通过现有方法制备。
Catalyst-Dependent Stereodivergent and Regioselective Synthesis of Indole-Fused Heterocycles through Formal Cycloadditions of Indolyl-Allenes
作者:Liang-Yong Mei、Yin Wei、Xiang-Ying Tang、Min Shi
DOI:10.1021/jacs.5b02080
日期:2015.7.1
catalyst through [3 + 2] cycloaddition of allene with indole, affording different diazabenzo[a]cyclopenta[cd]azulenes as epimers, respectively. In addition, in the presence of IPrAuCl and AgNTf2, highly regioselective exo-type [2 + 2] cycloaddition was observed, in which allene served as a 2C synthon. This methodology provides a simple and straightforward approach for the construction of indole-fused tricyclic
Gold(<scp>i</scp>)-catalyzed highly stereoselective synthesis of polycyclic indolines: the construction of four contiguous stereocenters
作者:Jin-Ming Yang、Peng-Hua Li、Yin Wei、Xiang-Ying Tang、Min Shi
DOI:10.1039/c5cc08381h
日期:——
A convenient and efficient synthetic method has been developed to construct highly functionalized polycyclic indoline skeletons with four contiguous stereocenters.