Synthesis of monoalkylated calix[4]arenes via direct alkylation
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چکیده
منابع مشابه
Direct β-Alkylation of Aldehydes via Photoredox Organocatalysis
Direct β-alkylation of saturated aldehydes has been accomplished by synergistically combining photoredox catalysis and organocatalysis. Photon-induced enamine oxidation provides an activated β-enaminyl radical intermediate, which readily combines with a wide range of Michael acceptors to produce β-alkyl aldehydes in a highly efficient manner. Furthermore, this redox-neutral, atom-economical C-H...
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'The development of a new, direct method for the preparation of dibenzo[a,e]cycloocta-1,5-dienes from phenylacetaldehyde by a double ortho Friedel-Crafts alkylation is described. When benzaldehyde (2b) is treated with trimethylsilyl iodide (3), a,n-diiodotoluene (6) is formed in high yield via the intermediacy of a-iodobenzyl trimethylsilyl ether (4b). Treatment of phenylacetaldehyde (%a) with ...
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ژورنال
عنوان ژورنال: Tetrahedron
سال: 1991
ISSN: 0040-4020
DOI: 10.1016/s0040-4020(01)96179-4