Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Yongxian Sun"'
Publikováno v:
The Journal of Organic Chemistry. 78:5393-5400
A series of cis-2,3-disubstituted cyclopropane 1,1-diesters were examined in the AlCl3-promoted [3 + 2]-annulations with aldehydes. In this reaction, these cis-cyclopropanes displayed reactivities starkly different from their trans counterparts in te
Publikováno v:
Tetrahedron. 69:2733-2739
A new Michael-initiated cyclopropanation reaction using α-bromochalcones as Michael acceptor was developed. Compared to previous works using arylidenemalonates as Michael acceptor, this novel protocol could improve the synthesis of trans-isomers of
Publikováno v:
The Journal of Organic Chemistry. 76:229-233
The AlCl(3)-catalyzed [3 + 2] cycloaddition reaction of diethyl trans-2,3-disubstituted cyclopropane-1,1-dicarboxylates and aromatic aldehydes was carried out under mild conditions to provide a series of diethyl 2,5-diaryl-4-benzoyltetrahydrofuran-3,
Publikováno v:
ChemInform. 45
Title compounds (I) are found to be significantly more reactive than their corresponding trans-isomers in the annulation reaction with isothiocyanates (II).
Publikováno v:
ChemInform. 44
A facile and highly stereoselective synthesis to pentasubstituted tetrahydrofuran derivatives, which are not easily accessible by other methods, is presented.
Publikováno v:
ChemInform. 44
Besides good yields for the exclusive formation of the trans-isomers (III), this Michael-initiated ring closure reaction also provides the first access to the cis-isomers (IV) of the depicted densely substituted cyclopropanes.
Publikováno v:
ChemInform. 42
The reaction with electron-rich aromatic aldehydes allows facile and selective access to 2,4-trans-2,5-trans-pentasubstituted tetrahydrofurans.
Publikováno v:
Organic & Biomolecular Chemistry. 11:7859
cis-2,3-Disubstituted cyclopropane 1,1-diesters were found to be much more reactive than their corresponding trans-isomers in the AlCl3-promoted [3 + 2]-annulations with isothiocyanates. The reaction with the cis-cyclopropanes proceeded to completion
Publikováno v:
Journal of Organic Chemistry; 6/7/2013, Vol. 78 Issue 11, p5393-5400, 8p
Publikováno v:
Journal of Organic Chemistry; 1/7/2011, Vol. 76 Issue 1, p229-233, 5p