20731-74-2Relevant articles and documents
Selective and efficient syntheses of phototoxic 2,2':5',2''-terthiophene derivatives bearing a functional substituent in the 3'- or the 5-position
Rossi,Carpita,Ciofalo,Lippolis
, p. 8443 - 8460 (1991)
Efficient and selective procedures have been developed to prepare on a medium scale several phototoxic 2,2':5',2''-terthiophene derivatives of general formula 2 and 3, which are characterized by a functional substituent in the 3'- or the 5-position. Most of these procedures, which are based on the construction of the 2,2':5',2''-terthiophene moiety and involve palladium-mediated carbon-carbon bond forming reactions, allow to overcome synthetic difficulties that may be found in the synthesis of compounds 2 and 3 starting from 2,2':5',2''-terthiophene (1a).
A containing oxygen race element and five fused ring conjugated molecule with the synthetic method of derivative thereof and use
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Paragraph 0050, (2018/04/21)
The invention relates to an oxygen family element-containing penta-condensed ring conjugated molecule and its derivative synthetic method and a purpose thereof. A structure of the oxygen family element-containing penta-condensed ring conjugated molecule is shown as follows, and a structure of the derivative of the oxygen family element-containing penta-condensed ring conjugated molecule is shown as follows.
PROCESSES FOR PRODUCING 3-(METHYLTHIO) THIOPHENE
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Page/Page column 3, (2011/04/25)
Processes are provided for producing 3-(methylthio) thiophene by (i) combining at least an alkyl lithium, one or more alkanes and an ether to form a first combination, (ii) at a temperature of about -30°C to about -25°C and over a time period of at least about 30 minutes, adding 3-bromothiophene diluted in an ether to the first combination to form a second combination, (iii) at a temperature of about -25°C to about -20°C combining at least the second combination and dimethyl disulfide, and (iv) yielding at least the 3-(methylthio) thiophene.