Diazirine derivatives of aromatic heterocyclic compounds
申请人:Shell Research Limited
公开号:US05120861A1
公开(公告)日:1992-06-09
Compounds of the formula ##STR1## in which Het represents an optionally substituted aromatic heterocycle having a sulphur or oxygen hetero atom and attached via a ring carbon atom, and X is halogen, alkyl, alkaryl, cyano, alkoxy, mono- or di-alkylamino, acyloxy or aryl, are useful intermediates to a range of cyclopropane derivatives. Processes for their preparation and their use in further synthetic processes are also described.
NOVEL PATHWAY FOR THE SYNTHESIS OF DIAZIRINES, THAT MAY OR MAY NOT BE ENRICHED IN NITROGEN-15
申请人:UNIVERSITE DE ROUEN NORMANDIE
公开号:US20220098155A1
公开(公告)日:2022-03-31
The present invention concerns a novel method for synthesising diazirines, that may or may not be enriched in nitro-gen-15, from amino acids or imines, via a one-pot synthesis method, comprising the reaction of the starting amino acid or imine with ammonia, which may or may not be enriched in nitrogen-15, and a hypervalent iodine oxidant. The present invention also relates to a method for synthesising ammonia enriched in nitrogen-15. The invention also concerns certain diazirines of formula (I) likely to be obtained by the claimed synthesis method, and also refers to the
15
N
2
-diazirines of formula (I′). The claimed diazirines can be used in photoaffinity labelling. The
15
N
2
-diazirines can also be used in hyperpolarisation, in particular in the medical imaging field.