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The synthesis of in position 4 substituted thieno[3.4- b]quinoline-9(4 H)-ones ( 6) by aromatization of 1.4-dihydrothieno[3.4- b]quinoline-9(3 H)-ones ( 4) and attempts to cyclize 4-phenylamino-3-thiophenecarboxylic acid ( 3c), or derivatives thereof, to compounds of type 6 are described. [ABSTRACT FROM AUTHOR]

The synthesis of 5-(o-trifluoromethylphenyl)-1 H-thieno-[3,4- e]1,4-diazepin-2(3 H)-one ( 7) and its nitration and chlorination in pos. 8 are described. [ABSTRACT FROM AUTHOR]

The synthesis of 5-(o-chlorophenyl)-7-trifluoromethyl-1 H-thieno[3.2− e]-1.4-diazepin-2(3 H)-one ( 10) starting from ethyl 3-amino-5-trifluoromethyl-2-thiophenecarboxylate ( 1) is described. [ABSTRACT FROM AUTHOR]

The synthesis of 5-phenyl-1 H-thieno[3.4- e]1.4-diazepin-2(3 H)-one ( 16), its alkylation in position 1 and the preparation of the intermediate 3-(4-aminothienyl)-phenylketone ( 8) are described. In addition thieno[3.4- b]pyridin-2(1 H)-one ( 7) is described. [ABSTRACT FROM AUTHOR]

The mechanism of the Dieckmann-reaction of methyl 3-(methoxycarbonylmethylthio)-propionate ( 1) to methyl 4-oxotetrahydrothiophene-3-carboxylate ( 2) and methyl 3-oxo-tetrahydrothiophene-2-carboxylate ( 3) and a simple technique for the preparation of methyl 4-oxo-tetrahydrothiophene-3-carboxylate ( 2) free from the isomere 3 are described. [ABSTRACT FROM AUTHOR]

Chlorination and nitration of 5-phenyl-1 H-thieno-[3.4- e]1.4-diazepin-2(3 H)-one ( 1) are described. It is proved by unambiguous synthesis of the chloro derivative that electrophilic substitution of 1 occurs in position 8. Chlorinated 1 is methylated in position 1. [ABSTRACT FROM AUTHOR]

The preparation of the title compounds ( 13 and 14) and there methylation in position 1 are described. [ABSTRACT FROM AUTHOR]

The preparation of the said compound ( 2) and its methylation in position 1 are described. [ABSTRACT FROM AUTHOR]

The preparation of 4-phenyl-[1.4]-diazepino[6.7.1- kl]phenothiazin-1(2 H)-one ( 5) is described and some of its properties are compared with those of 1.4-benzodiazepines. [ABSTRACT FROM AUTHOR]

The preparation of 7-methoxycarbonyl-5-phenyl-1 H-thieno[2,3- e]1,4-diazepin-2(3 H)-one ( 8) and its 1-methyl-derivative ( 10) is described. Hydrolysation of these two products yielded neither of the two possible acids 3 respectively 13. [ABSTRACT FROM AUTHOR]

Copyright of Chemical Monthly / Monatshefte für Chemie is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The nitration of the title compound 1 results to a main-and a by-nitroproduct. These were separated and their structure was confirmed by chemical proof. [ABSTRACT FROM AUTHOR]

Copyright of Chemical Monthly / Monatshefte für Chemie is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chemical Monthly / Monatshefte für Chemie is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chemical Monthly / Monatshefte für Chemie is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chemical Monthly / Monatshefte für Chemie is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chemical Monthly / Monatshefte für Chemie is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chemical Monthly / Monatshefte für Chemie is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)