Synthesis and structure of trans-bis(1,4-dimesityl-3-methyl-1,2,3-triazol-5-ylidene)palladium(II) dichloride and diacetate. Suzuki–Miyaura coupling of polybromoarenes with high catalytic turnover efficiencies

trans-Bis(1,4-dimesityl-3-methyl-1,2,3-triazol-5-ylidene)palladium(II) dichloride has been shown to be an excellent catalyst for the multiple Suzuki–Miyaura coupling reactions of polybromoarenes to the corresponding fully substituted polyarylarenes. The reactions proceeded in excellent yields and wi...

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Main Authors: Jeelani Basha Shaik, Venkatachalam Ramkumar, Babu Varghese, Sethuraman Sankararaman
Format: Article
Language:English
Published: Beilstein-Institut 2013-04-01
Series:Beilstein Journal of Organic Chemistry
Subjects:
Online Access:https://doi.org/10.3762/bjoc.9.79
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author Jeelani Basha Shaik
Venkatachalam Ramkumar
Babu Varghese
Sethuraman Sankararaman
author_facet Jeelani Basha Shaik
Venkatachalam Ramkumar
Babu Varghese
Sethuraman Sankararaman
author_sort Jeelani Basha Shaik
collection DOAJ
description trans-Bis(1,4-dimesityl-3-methyl-1,2,3-triazol-5-ylidene)palladium(II) dichloride has been shown to be an excellent catalyst for the multiple Suzuki–Miyaura coupling reactions of polybromoarenes to the corresponding fully substituted polyarylarenes. The reactions proceeded in excellent yields and with high turnover numbers. With 1,4-dibromobenzene the catalyst was found to be active for up to 13 consecutive cycles with a turnover number of 1260. The polyarylarenes were obtained in pure form after crystallization once without recourse to chromatographic purification. The single-crystal X-ray structures of the chloro (1) as well as the corresponding acetato (2) complexes are also reported and compared with the corresponding complexes of 1,4-diphenyl-3-methyl-1,2,3-triazol-5-ylidene as the ligand.
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spelling doaj.art-6a205256f0f7498ea636f652e7ec56ff2022-12-21T22:11:48ZengBeilstein-InstitutBeilstein Journal of Organic Chemistry1860-53972013-04-019169870410.3762/bjoc.9.791860-5397-9-79Synthesis and structure of trans-bis(1,4-dimesityl-3-methyl-1,2,3-triazol-5-ylidene)palladium(II) dichloride and diacetate. Suzuki–Miyaura coupling of polybromoarenes with high catalytic turnover efficienciesJeelani Basha Shaik0Venkatachalam Ramkumar1Babu Varghese2Sethuraman Sankararaman3Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, IndiaDepartment of Chemistry, Indian Institute of Technology Madras, Chennai 600036, IndiaSophisticated Analytical Instrument Facility, Indian Institute of Technology Madras, Chennai 600036, IndiaDepartment of Chemistry, Indian Institute of Technology Madras, Chennai 600036, Indiatrans-Bis(1,4-dimesityl-3-methyl-1,2,3-triazol-5-ylidene)palladium(II) dichloride has been shown to be an excellent catalyst for the multiple Suzuki–Miyaura coupling reactions of polybromoarenes to the corresponding fully substituted polyarylarenes. The reactions proceeded in excellent yields and with high turnover numbers. With 1,4-dibromobenzene the catalyst was found to be active for up to 13 consecutive cycles with a turnover number of 1260. The polyarylarenes were obtained in pure form after crystallization once without recourse to chromatographic purification. The single-crystal X-ray structures of the chloro (1) as well as the corresponding acetato (2) complexes are also reported and compared with the corresponding complexes of 1,4-diphenyl-3-methyl-1,2,3-triazol-5-ylidene as the ligand.https://doi.org/10.3762/bjoc.9.79C–C couplingN-heterocyclic carbenepalladiumSuzuki–Miyaura coupling1,2,3-triazolylidene
spellingShingle Jeelani Basha Shaik
Venkatachalam Ramkumar
Babu Varghese
Sethuraman Sankararaman
Synthesis and structure of trans-bis(1,4-dimesityl-3-methyl-1,2,3-triazol-5-ylidene)palladium(II) dichloride and diacetate. Suzuki–Miyaura coupling of polybromoarenes with high catalytic turnover efficiencies
Beilstein Journal of Organic Chemistry
C–C coupling
N-heterocyclic carbene
palladium
Suzuki–Miyaura coupling
1,2,3-triazolylidene
title Synthesis and structure of trans-bis(1,4-dimesityl-3-methyl-1,2,3-triazol-5-ylidene)palladium(II) dichloride and diacetate. Suzuki–Miyaura coupling of polybromoarenes with high catalytic turnover efficiencies
title_full Synthesis and structure of trans-bis(1,4-dimesityl-3-methyl-1,2,3-triazol-5-ylidene)palladium(II) dichloride and diacetate. Suzuki–Miyaura coupling of polybromoarenes with high catalytic turnover efficiencies
title_fullStr Synthesis and structure of trans-bis(1,4-dimesityl-3-methyl-1,2,3-triazol-5-ylidene)palladium(II) dichloride and diacetate. Suzuki–Miyaura coupling of polybromoarenes with high catalytic turnover efficiencies
title_full_unstemmed Synthesis and structure of trans-bis(1,4-dimesityl-3-methyl-1,2,3-triazol-5-ylidene)palladium(II) dichloride and diacetate. Suzuki–Miyaura coupling of polybromoarenes with high catalytic turnover efficiencies
title_short Synthesis and structure of trans-bis(1,4-dimesityl-3-methyl-1,2,3-triazol-5-ylidene)palladium(II) dichloride and diacetate. Suzuki–Miyaura coupling of polybromoarenes with high catalytic turnover efficiencies
title_sort synthesis and structure of trans bis 1 4 dimesityl 3 methyl 1 2 3 triazol 5 ylidene palladium ii dichloride and diacetate suzuki miyaura coupling of polybromoarenes with high catalytic turnover efficiencies
topic C–C coupling
N-heterocyclic carbene
palladium
Suzuki–Miyaura coupling
1,2,3-triazolylidene
url https://doi.org/10.3762/bjoc.9.79
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