Diastereoselective synthesis of 1-alkyl-2,4,6-trioxoperhydropyrimidine-5-spiro-3′-(1′,2′,3′,4′-tetrahydroquinolines)
摘要:
Knoevenagel products formed by the condensation of N-monoalkyl barbituric acids with o-tert-amino benzaldehydes undergo tert-amino effect reactions (T-reactions) yielding 1-alkyl-2,4,6-trioxoperhydropyrimidine-5-spiro-3'-(1',2',3',4'-tetrahydroquinoline) derivatives as a mixture of (S*,S*)- and (S*,R*)-diastereomers. Mostly, the major diastereomer has the S*,S*-configuration. According to X-ray diffraction data in the solid form and NOE data in solution, diastereoselectivity of the T-reactions can be associated with the structure of the Knoevenagel products whose conformation is fixed by the strong intramolecular C-H center dot center dot center dot pi interaction. (c) 2010 Elsevier Ltd. All rights reserved.
COLORED COMPOSITION, COLORED CURED FILM, COLOR FILTER, METHOD FOR PRODUCING COLOR FILTER, LIQUID CRYSTAL DISPLAY DEVICE, SOLID-STATE IMAGING DEVICE, AND NOVEL DIPYRROMETHENE METAL COMPLEX COMPOUND OR TAUTOMER THEREOF
申请人:FUJIFILM CORPORATION
公开号:US20140038092A1
公开(公告)日:2014-02-06
A colored composition including at least one selected from the group consisting of a compound represented by the following formula (I) and a tautomer thereof. In formula (I), R
2
to R
5
each independently represent a hydrogen atom or a monovalent substituent, R
7
represents a hydrogen atom, a halogen atom, an alkyl group, or the like, Ma represents a metal or a metal compound, X
3
and X
4
each independently represent NR, a nitrogen atom, an oxygen atom, or a sulfur atom, R represents a hydrogen atom, an alkyl group, or the like, Y
1
and Y
2
each independently represent NRc, a nitrogen atom, or a carbon atom, Rc represents a hydrogen atom, an alkyl group, or the like, and R
8
and R
9
each independently represent an alkyl group, an alkenyl group, or the like. Z represents an atomic group that forms a nitrogen-containing ring having a specific structure.
US4382983A
申请人:——
公开号:US4382983A
公开(公告)日:1983-05-10
US8778577B2
申请人:——
公开号:US8778577B2
公开(公告)日:2014-07-15
Diastereoselective synthesis of 1-alkyl-2,4,6-trioxoperhydropyrimidine-5-spiro-3′-(1′,2′,3′,4′-tetrahydroquinolines)
作者:Konstantin A. Krasnov、Victor G. Kartsev、Victor N. Khrustalev
DOI:10.1016/j.tet.2010.06.015
日期:2010.8
Knoevenagel products formed by the condensation of N-monoalkyl barbituric acids with o-tert-amino benzaldehydes undergo tert-amino effect reactions (T-reactions) yielding 1-alkyl-2,4,6-trioxoperhydropyrimidine-5-spiro-3'-(1',2',3',4'-tetrahydroquinoline) derivatives as a mixture of (S*,S*)- and (S*,R*)-diastereomers. Mostly, the major diastereomer has the S*,S*-configuration. According to X-ray diffraction data in the solid form and NOE data in solution, diastereoselectivity of the T-reactions can be associated with the structure of the Knoevenagel products whose conformation is fixed by the strong intramolecular C-H center dot center dot center dot pi interaction. (c) 2010 Elsevier Ltd. All rights reserved.