One-Pot Primary Aminomethylation of Aryl and Heteroaryl Halides with Sodium Phthalimidomethyltrifluoroborate
摘要:
A one-pot primary aminomethylation of aryl halides, triflates, mesylates, and tosylates via Suzuki-Miyaura cross-coupling reactions with sodium phthalimidomethyltrifluoroborate followed by deamidation with ethylenediamine is reported.
An efficient palladium–benzimidazolyl phosphine complex for the Suzuki–Miyaura coupling of aryl mesylates: facile ligand synthesis and metal complex characterization
作者:Kin Ho Chung、Chau Ming So、Shun Man Wong、Chi Him Luk、Zhongyuan Zhou、Chak Po Lau、Fuk Yee Kwong
DOI:10.1039/c2cc15972d
日期:——
A new class of easily accessible hemilabile benzimidazolyl phosphine ligands has been developed. The ligand skeleton is prepared from commercially available and inexpensive o-phenylenediamine and 2-bromobenzoic acid. With catalyst loading down to 0.5 mol% palladium, excellent catalytic activity towards the Suzuki-Miyaura coupling of aryl mesylates is still observed. This represents the lowest catalyst
Palladium-Catalyzed Phosphorylation of Aryl Mesylates and Tosylates
作者:Wai Chung Fu、Chau Ming So、Fuk Yee Kwong
DOI:10.1021/acs.orglett.5b03104
日期:2015.12.4
The first general palladium catalyst for the phosphorylation of arylmesylates and tosylates is reported. The newly developed system exhibits excellent functional group compatibility. For instance, free amino, keto, ester, and amido groups, as well as heterocycles, remain intact during the course of reaction. The mesylated derivatives of biologically active compounds such as 17β-estradiol and 6-hydroxyflavone
Palladium-Catalyzed Borylation of Aryl Mesylates and Tosylates and Their Applications in One-Pot Sequential Suzuki-Miyaura Biaryl Synthesis
作者:Wing Kin Chow、Chau Ming So、Chak Po Lau、Fuk Yee Kwong
DOI:10.1002/chem.201100361
日期:2011.6.14
Top of the one‐pots! The first palladium‐catalyzed borylation of aryltosylates and mesylates is described. The reaction conditions are mild and provide excellent functional‐group compatibility (e.g., R=CN, CHO, COOMe, C(O)R, NH2, or NH‐indole; see scheme). Pd/MeO‐CM‐phos allows one‐pot sequential reactions in the preparation of unsymmetrical biaryls.
Palladium-Catalyzed Sonogashira Coupling of Aryl Mesylates and Tosylates
作者:Pui Ying Choy、Wing Kin Chow、Chau Ming So、Chak Po Lau、Fuk Yee Kwong
DOI:10.1002/chem.201001269
日期:2010.9.3
Up to speed: The first general and mild protocol for the Sonogashiracoupling of aryl mesylates is presented (see scheme). The coupling intermediate also provides facile access to 2‐substituted isoquinolines.
A General Palladium Catalyst System for Suzuki−Miyaura Coupling of Potassium Aryltrifluoroborates and Aryl Mesylates
作者:Wing Kin Chow、Chau Ming So、Chak Po Lau、Fuk Yee Kwong
DOI:10.1021/jo100846t
日期:2010.8.6
The first general examples of palladium-catalyzed Suzuki-type cross-coupling of aryl and heteroaryl mesylates with potassium aryl and heteroaryltrifluoroborates are presented. In addition to biaryl couplings, the cross-coupling reactions of arylmesylates with alkyl and vinyltrifluoroborate salts have also been successfully accomplished.