Hello,

i am a graduate student working on the synthesis of
1-(2-isocyanophenyl)-pyrrole.
Starting from 1-(2-aminophenyl)-pyrrole i tried to formylate in refluxing
Ethyl- and alternatively in refluxing Methyl-formate as described in Kazu=
hiro
Kobayashi, Chemistry Letters, p. 551f (1998). Unfortunately there was no
reaction time mentioned and the formylation yielded insignificant amounts=
 of
product (traces were discernible in 1H-NMR-spectra) after reaction times =
of up
to six days.

Is there a trick to this reaction (some catalyst?) or is there another
synthetic route to 1-(2-N-formylaminophenyl)-pyrrole or
1-(2-isocyanophenyl)-pyrrole?

Thanks in advance for all answers.

Alexander W=F6rndle
graduate student at
Technische Universit=E4t M=FCnchen

E-mail: woerndle@stud.chemie.tu-muenchen.de
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