Detail of "2689-68-1"

Reference

Alkyl 3-oxotetrahydrothiophenecarboxylates

Alkyl 3-oxotetrahydrothiophenecarboxylates. Waring, David Richard (Kodak Ltd., UK). Brit. UK Pat. Appl. GB 2122185 A1 11 Jan 1984, 4 pp. (English). (United Kingdom). CODEN: BAXXDU. CLASS: IC: C07D333-38. APPLICATION: GB 82-18261 24 Jun 1982. DOCUMENT TYPE: Patent CA Section: 27 (Heterocyclic Compounds (One Hetero Atom)) Sulfides RO2CCH2CH2SCH2CO2R (R = alkyl) were treated with alkali alkoxides to yield mixts. of thiophene derivs. 7400-45-5 and 2689-68-1 are also in the experiment. I and II. Thus, NaOMe in a THF-PhMe mixt. was treated with MeO2CCH2CH2SCH2CO2Me, the mixt. was stirred, and H2SO4 was added to give a mixt. of I- and II (R = Me). .

Dihydrothiophenecarboxylic acid esters and their herbicidal use

Dihydrothiophenecarboxylic acid esters and their herbicidal use. Acker, Rolf Dieter; Rossy, Phillip A.; Hamprecht, Gerhard; Wuerzer, Bruno (BASF A.-G. , Fed. Rep. Ger.). Ger. Offen. DE 3211851 A1 6 Oct 1983, 41 pp. (German). (Germany). CODEN: GWXXBX. CLASS: IC: C07D333-38; A01N047-36. APPLICATION: DE 82-3211851 31 Mar 1982. DOCUMENT TYPE: Patent CA Section: 27 (Heterocyclic Compounds (One Hetero Atom)) Section cross-reference(s): 5 Herbicidal (no data) I [R = alkenyl, alkynyl, cycloalkyl, (un)substituted alkyl, Ph, PhCH2; R1 = H, R] were prepd. Thus, 15.1 parts Me 1,5-dihydro-4-oxo-3-thiophenecarboxylate was condensed with 14.2 parts cyclohexylurea to give 20.3 parts I (R = cyclohexyl, R1 = Me).Except for chemicals metioned above, 88347-60-8 and 2689-68-1 are also used. .