Synthesis of function-oriented 2-phenyl-2H-chromene derivatives using l-pipecolinic acid and substituted guanidine organocatalysts
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چکیده
منابع مشابه
6,8-Dibromo-3-nitro-2-phenyl-2H-chromene
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In the title compound, C(24)H(26)O(5), the 2H-chromene ring system is essentially planar, with a maximum deviation of 0.029 (2) Å from the best-fit mean plane incorporating both rings. The dihedral angle between the 2H-chromene ring system and the benzene ring is 21.00 (1)°. In the crystal, pairs of C-H⋯O hydrogen bonds generate an R(2) (2)(8) ring pattern. These contacts are bolstered by weake...
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ژورنال
عنوان ژورنال: Tetrahedron Letters
سال: 2010
ISSN: 0040-4039
DOI: 10.1016/j.tetlet.2010.02.143