Digitale Medien
New York, NY
:
Wiley-Blackwell
Helvetica Chimica Acta
73 (1990), S. 411-416
ISSN:
0018-019X
Schlagwort(e):
Chemistry
;
Organic Chemistry
Quelle:
Wiley InterScience Backfile Collection 1832-2000
Thema:
Chemie und Pharmazie
Notizen:
Synthesis of 2-Oxo-2H-pyran-5-carboxylate Derivatives3-Substituted diethyl pent-2-enedioates are easily formylated by means of ethyl formate/TiCl4/4-methylmorpholine to produce the ethoxymethylene derivatives, which are smoothly cyclized either with HCOOH or PPA to corresponding 2-oxo-2H-pyran-5-carboxylate derivatives.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1002/hlca.19900730220
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