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Goldfarb

W. Goldfarb, "Federal Water PoUution Control Law Since 1972," m Advances in Environmental Science and Engineerings Vol. 2, Gordon and Breach... [Pg.289]

Linda Goldfarb Jane Rathbun 201 East 50th Street New York, NY 10022 (800) 733-3000... [Pg.289]

Archer, owing to very unfortunate coincidences, had mistaken acid potassium tartrate for the acetylamino acid. Goldfarb et al. prepared authentic 5-acetylamino-2-thiophenecarboxylic acid, mp 230 232°C (methyl ester, mp 171-171.5°C ethyl ester, mp 161°C), through reduction of 5-nitro-2-thiophenecarboxylic acid with Raney nickel in acetic anhydride and proved the structure by Raney nickel desulfurization to 8-aminovaleric acid. They also confirmed that the acid mp 272-273°C (methyl ester, mp 135-136°C ethyl ester, mp 116-117°C) is 4-acetylamino-2-thiophenecar boxy lie acid as originally stated by Steinkopf and Miiller. The statement of Tirouflet and Chane that the acid obtained upon reduction and acetylation of 5-nitro-2-thiophenecarboxylic acid melts at 272°C must result from some mistake as they give the correct melting point for the methyl ester. [Pg.51]

Additional examples of the reactivity of the 4-position in thiophenes with —I-j-M-substituent in the 3-position are provided by the bromination of 3-thiophenecarboxylic acid to 2,4,5-tribromothio-phenecarboxylic acid and the recent diacetylation of 2,5-dimethyl-thiophene by Goldfarb et who used the swamping catalyst... [Pg.56]

The Friedel-Crafts cyclization of w-(2-thienyl) substituted longer fatty acids (130, n = 5,8,9) under high dilution conditions has been investigated by Goldfarb et They used boiling ethereal AlClg,... [Pg.64]

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See also in sourсe #XX -- [ Pg.43 ]

See also in sourсe #XX -- [ Pg.25 ]

See also in sourсe #XX -- [ Pg.192 ]



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Broyden-Fletcher-Goldfarb-Shanno BFGS), formula

Broyden-Fletcher-Goldfarb-Shanno algorithm

Broyden-Fletcher-Goldfarb-Shanno method

Broyden-Fletcher-Goldfarb-Shanno procedure

Broyden-Fletcher-Goldfarb-Shanno)

Update methods Broyden-Fletcher-Goldfarb-Shanno

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