On the Reaction of alpha,alpha-Dichlorocarbenium Ions with Isocyanates

Jochims, Johannes; Troll, Carsten; Fischer, Helmut; Wang, Q.; Hamed, A.; Ismail, Abd El-hamid; Taha Abdel-Aal, M.; Zeid, Ibrahim; Al-Talib, Mahmoud

On the Reaction of alpha,alpha-Dichlorocarbenium Ions with Isocyanates

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Datum

1992

Autor:innen

Jochims, Johannes

Troll, Carsten

Fischer, Helmut

Wang, Q.

Hamed, A.

Ismail, Abd El-hamid

Taha Abdel-Aal, M.

Zeid, Ibrahim

Al-Talib, Mahmoud

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Journal f�r Praktische Chemie/Chemiker-Zeitung. 1992, 334(8), pp. 669-675. ISSN 0941-1216. eISSN 1521-3897. Available under: doi: 10.1002/prac.19923340805

Zusammenfassung

Trichlormethanes 4 react with two equivalents of n-alkyl isocyanates R2-NCO in the presence of SbCl5 to furnish the 2,2-dichloro-5,6-dihydro-6-oxo2H-1,3,5-oxadiazinium salts (9). The structure of these heterocycles is confirmed by an X-ray analysis of 9d (R1 = ClC = CCl2, R2 = Et). p-Tolyl isocyanate is Friedel-Crafts alkylated by 4b in the presence of SbCl5. Subsequent ring closure affords the quinolinium salt 13, which is hydrolyzed to give inter alia the quinolone 16.

Fachgebiet (DDC)

540 Chemie

Zitieren

ISO 690

JOCHIMS, Johannes, Carsten TROLL, Helmut FISCHER, Q. WANG, A. HAMED, Abd El-hamid ISMAIL, M. TAHA ABDEL-AAL, Ibrahim ZEID, Mahmoud AL-TALIB, 1992. On the Reaction of alpha,alpha-Dichlorocarbenium Ions with Isocyanates. In: Journal f�r Praktische Chemie/Chemiker-Zeitung. 1992, 334(8), pp. 669-675. ISSN 0941-1216. eISSN 1521-3897. Available under: doi: 10.1002/prac.19923340805

BibTex

@article{Jochims1992React-23450,
  year={1992},
  doi={10.1002/prac.19923340805},
  title={On the Reaction of alpha,alpha-Dichlorocarbenium Ions with Isocyanates},
  number={8},
  volume={334},
  issn={0941-1216},
  journal={Journal f�r Praktische Chemie/Chemiker-Zeitung},
  pages={669--675},
  author={Jochims, Johannes and Troll, Carsten and Fischer, Helmut and Wang, Q. and Hamed, A. and Ismail, Abd El-hamid and Taha Abdel-Aal, M. and Zeid, Ibrahim and Al-Talib, Mahmoud}
}

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