18385-79-0Relevant academic research and scientific papers
Baker's yeast catalysed enantioselective reduction of chroman-4-ones
Ramadas,David Krupadanam
, p. 1119 - 1122 (2007/10/03)
Substituted chroman-4-ones 1a-10a on catalytic reduction with Baker's Yeast give (S)-chroman-4-ols 1c-11c with high enantioselectivity. The absolute configuration has been determined by specific rotation and CD spectra.
An efficient preparation of 7-methoxychromanone
Cao, Zhisong,Liehr, Joachim G.
, p. 1233 - 1245 (2007/10/03)
The reaction of m-methoxyphenyl 7 with 3-chloropropionaldehyde diethyl acetal 8 and the subsequent treatments gave the corresponding 7-methoxychromanone 6 in overall 54% yield. This method represents an efficient preparation of chromanone.
A NEW SYNTHETIC APPROACH TO THE ROTENOID RING SYSTEM
Lai, Steven M. F.,Orchison, Jack J. A.,Whiting, Donald A.
, p. 5895 - 5906 (2007/10/02)
The (+)-cis-chromanochromanones (2) and (3), respresenting the basic ring system of the natural insecticide rotenone, have been synthesised by a general procedure; the key step is 4-aroylation of the 4-(phenyl-sulphonyl)chromans (7; Z=SO2Ph).
2-(2,6-DIMETHYLPIPERIDINO)ACETONITRILE AS AN ACYL CARBANION EQUIVALENT
Wakamatsu, Takeshi,Kondo, Junichi,Hobara, Satoshi,Ban, Yoshio
, p. 481 - 484 (2007/10/02)
Reaction of lithio 2-(2,6-dimethylpiperidino)acetonitrile with alkyl halides affords monoalkylation products which are easily hydrolyzed under mild conditions to give the homogeneous aldehyde or its acetal in moderate yield.In the case of alkyl halides having an electron donating group on aromatic ring the cyclization products are obtained.
