Zobrazeno 1 - 10
of 42
pro vyhledávání: '"Tuan A. Dang"'
Autor:
Nguyen Ngoc Tuan, Hoang Le Tuan Anh, Nguyen Van Tuyen, Peter Langer, Tuan Thanh Dang, Ha Nam Do, Nguyen Minh Quan, Tran Quang Hung, Ban Van Phuc, Nguyen Quang An
Publikováno v:
Synlett. 32:1004-1008
Two efficient and practical approaches are reported for the synthesis of β- and δ-carbolines from 3,4-dibromopyridine. The synthesis is based on site-selective Cu-catalyzed double C–N coupling reactions and subsequent annulations by twofold Pd-ca
Autor:
Nguyen Minh Quan, Truong Thi Thanh Nga, Tuan Thanh Dang, Dinh Van Tinh, Van Tuyen Nguyen, Peter Langer, Ban Van Phuc, Ha Nam Do, Nguyen Quyet Tien, Tran Quang Hung
Publikováno v:
Synlett. 32:611-615
An efficient Cu-catalyzed synthesis of carbazole derivatives is reported, which proceeds by double C–N coupling reactions of 2,2′-dibromobiphenyl and amines in the presence of air. The reaction is robust, proceeds in high yields, and tolerates a
Autor:
Peter Langer, Ngo Thi Thuan, Tuan Anh Nguyen Tien, Nguyen Thi Son, Marian Blanco Ponce, Tuan Thanh Dang, Peter Ehlers
Publikováno v:
Synlett. 31:1308-1312
Two-step sequential procedures for the Pd-catalyzed synthesis of 5- and 6-azaindoles are reported. The reactions proceed in very good yields. 6-Azaindoles are formed through site-selective Pd-catalyzed Sonogashira reaction of 3,4-dibromopyridine with
Autor:
Duong Ha Nam, Tuan Thanh Dang, Van Ha Nguyen, Ban Van Phuc, Quang Thang Trịnh, Tran Quang Hung, Ngoc-Khanh Nguyen
Publikováno v:
Molecular Catalysis. 505:111462
A highly efficient copper(II) catalyst system for alkylation of indoles with alcohols via hydrogen borrowing method has been developed to afford C3-alkylated indoles in good to excellent yields. Cu(OAc)2 in the combination with dppm ligand has been f
Autor:
Tra My Le, Peter Langer, Nguyen Thi Son, Duc Long Tran, Tran Quang Hung, Quang Thang Trinh, Ngoc-Khanh Nguyen, Tuan Thanh Dang
Publikováno v:
Tetrahedron Letters. 68:152936
Bis(3-indolyl)methanes (BIM) are important and present in the structure of many alkaloid and bioactive compounds (anti-inflammatory, anticancer, antiobesity, antimicrobial, etc.). Herein, we have reported an air stable and convenient Cu(OAc)2 catalys
Autor:
Tuan Thanh Dang, Abdul Majeed Seayad
Publikováno v:
Advanced Synthesis & Catalysis. 358:3373-3380
An efficient ruthenium catalyst is reported, for the first time, to catalyse the α-methylation of ketones and esters using methanol as a green methylating agent. The in situ generated catalyst from the complexes [RuCp*Cl2]2 or [RuCp*Cl2]n with dpePh
Autor:
Akira Tsukamoto, Duc-Hung Le, Khai-Duy Nguyen, Phuc Hong Than, Kuniyasu Suzaki, Cong-Kha Pham, Tuan-Kiet Dang, Xuan-Tu Tran, Ckristian Duran, Trong-Thuc Hoang, Quynh Nguyen Quang Nhu
Publikováno v:
IEICE Electronics Express. 17:20200282-20200282
Publikováno v:
Advanced Synthesis & Catalysis. 358:1328-1336
We have developed a palladium(0)-catalyzed tandem process which involves the cross-coupling reaction of N-tosylhydrazones with dibromide compounds followed by a sequence of intramolecular 5-exo-trig, 3-exo-trig cyclization, ring opening, and β-hydri
Autor:
Tuan Thanh Dang, Peter Ehlers, Hung Quang Tran, Hoang Huy Do, Peter Langer, Lars Ohlendorf, Thang Ngoc Ngo, Alexander Villinger
Publikováno v:
Synlett. 26:2429-2433
A palladium-catalyzed one-pot reaction for the synthesis of benzo[b]carbazolediones is described which proceeds by amination of 2,3-dibromonaphthoquinone, Suzuki cross-coupling with (2-bromophenyl)boronic acid, and subsequent intramolecular C–N B
Autor:
Hans-Joachim Lunk, Tuan A. Dang
Publikováno v:
ChemTexts. 4
The lecture lesson starts with a brief review of freeze-drying history, its scientific basics, and numerous applications. Freeze drying is also a new effective method to prepare solid analytical standards, which is superior to the conventional method