Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Shi, Yijun"'
Convenient synthesis of N-1-alkyl benzimidazoles via Pd catalyzed C–N bond formation and cyclization
Publikováno v:
Synthetic Communications. 51:2387-2396
N-1-Alkyl-2-unsubstituted benzimidazoles were directly synthesized by intermolecular coupling of formimidamides with benzylamines; the syntheses were catalyzed by Pd(OAc)2 in one pot, giving rise to moderate to good yields. Aromatic formamidines with
Publikováno v:
Synthetic Communications. 51:2160-2167
We report a two-step rapid and efficient synthesis of β-amino-α,β-unsaturated esters. Microwave-assisted synthesis was used throughout the process. Seventeen β-amino-α,β-unsaturated esters were pro...
Autor:
Michal Szostak, Shi Yijun, Liu Xuejing, Roman Szostak, Cao Han, Chengwei Liu, Yan Peng, Bie Fusheng, Han Ying
Publikováno v:
Organic & Biomolecular Chemistry. 19:2991-2996
We report conversion of esters to thioesters via selective C-O bond cleavage/weak C-S bond formation under transition-metal-free conditions. The method is notable for a general and practical transition-metal-free system, broad substrate scope and exc
Autor:
Han Ying, Chengwei Liu, Bie Fusheng, Shi Yijun, Michal Szostak, Yan Peng, Liu Xuejing, Cao Han
Publikováno v:
Organic Chemistry Frontiers. 8:1587-1592
We report a general and practical palladium-catalyzed intramolecular decarbonylative coupling of thioesters via C–S bond cleavage, decarbonylation and C–S bond reformation. This robust approach shows excellent functional group tolerance and broad
Publikováno v:
Organic letters. 23(20)
We report the palladium-catalyzed double-decarbonylative synthesis of aryl thioethers by an aryl exchange reaction between amides and thioesters. In this method, amides serve as aryl donors and thioesters are sulfide donors, enabling the synthesis of
Autor:
Chengwei Liu, Michal Szostak, Han Ying, Bie Fusheng, Shi Yijun, Liu Xuejing, Yan Peng, Cao Han
Publikováno v:
The Journal of organic chemistry. 86(15)
Decarbonylative synthesis of thioethers from thioesters proceeds in the presence of a catalytic amount of [Rh(cod)Cl]2 (2 mol %). The protocol represents the first Rh-catalyzed decarbonylative thioetherification of thioesters to yield valuable thioet
Publikováno v:
The Journal of organic chemistry. 85(23)
We report the rhodium-catalyzed base-free decarbonylative borylation of twisted amides. The synthesis of versatile arylboronate esters from aryl twisted amides is achieved via decarbonylative rhodium(I) catalysis and highly selective N-C(O) insertion
Publikováno v:
RSC advances. 10(2)
Diels–Alder reactions between cyclopentadiene analogs and p-benzoquinone were explored in water and yielded 83–97% product, higher than the results reported in water with a catalyst or cetrimonium bromide (CTAB) micelles. The novel adduct 10 was
Autor:
Liu Xuejing, Shi Yijun, Yan Peng, Chao-yue Sun, Jie Ma, Han Ying, Bie Fusheng, Hai-meng Wang, Cao Han
Publikováno v:
Tetrahedron. 76:131205
A simple and efficient protocol for cyclization between formamidines and ethyl isocyanoacetate has been described in the absence of metal catalyst and solvent. A series of 1-substituted-4-imidazolecarboxylates were synthesized in moderate to good yie
Publikováno v:
Tetrahedron Letters. 61:151752
4,4′-spirobi[pentacyclo[5.4.0.02,6.03,10.05,9]undecane] (10) was successfully prepared from the key intermediate (cyclopentadiene derivate, 1) by a nine steps synthetic strategy and avoided using the hardly obtainable spiro[4.4]nonatetraene as the