Scheme 18.
Synthetic pathway of 2-amino-4H-chromeno[3,4-d]thiazol-4-ones 65. Reagents and conditions. CS2 (1.2 mmol) and K2CO3 (3.0 mmol), FeCl3 (1.5 mmol), 110 °C, 6–8 h, N2, pyrrolidine 64% yield, N-ethylaniline 74% yield.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.