Ammonium Hydroxide → Oxane-4-carboxamide

In step (5) of Reaction Scheme I, a benzyloxy-4-chloro-3-nitroquinoline of Formula XIX is treated with an amine of Formula R1—NH2 to provide a benzyloxy-3-nitroquinolin-4-amine of Formula XX. The reaction is conveniently carried out by adding the amine of Formula R1—NH2 to a solution of the benzyloxy-4-chloro-3-nitroquinoline of Formula XIX in a suitable solvent such as dichloromethane or methanol in the presence of a tertiary amine such as triethylamine. The reaction can be carried out at ambient temperature or at an elevated temperature such as, for example, the reflux temperature of the solvent. The reaction product can be isolated using conventional methods. Several mines of Formula R1—NH2 are commercially available; others can be prepared by known synthetic methods. For example, methyl tetrahydro-2H-pyran-4-carboxylate treated with ammonium hydroxide to form tetrahydro-2H-pyran-4-carboxamide, which can then be reduced with lithium aluminum hydride to provide tetrahydro-2H-pyran-4-ylmethylamine.

1. customThe reaction
2. customcan be carried out at ambient temperature or at an elevated temperature
3. customThe reaction product can be isolated
4. customothers can be prepared

ORDレコード

ord-ce9fce475629448ab676fa3dcd87db44

出典データセット

uspto-grants-2014_10

DOI

10.6084/m9.figshare.5104873.v1

特許番号

US08871782B2