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An improved synthesis, characterization, and X-ray studies of 5-tert-butyl-3-nitrophthalonitrile

✍ Scribed by Łapok, Łukasz; Siudak, Alicja; Nowakowska, Maria

Book ID
120429971
Publisher
Elsevier Science
Year
2013
Tongue
French
Weight
512 KB
Volume
54
Category
Article
ISSN
0040-4039

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On treatment with 10% HF, butenolides 4a and 4b afforded enantiopure (-)-syringolides 1 (la) and 2 (lb) respectively in much higher yields. Unprecedentedly, the cyclic acetal 5a was also converted to la by reacting with an excess of p-TsOH. The structure of the ~ynthetic (-)-syringolide 1 (la) was s