Using ortho-bis(porpargyl alcohol) derivatives as starting materials, we employed sulfenyl or sulfinyl chloride under base condition to generate bis-allene intermediates.
Organic colors related to carcinogenic aromatic amine, especially the important intermediate 3,3' dichloroaniline of organic color are discussed in details.
It presented the synthetic methods as well as experiment results of brominated or chlorinated propyl antimonites and its intermediate propenyl anti-monite.
Nonnatural amino acid 3-(4-thiazolyl)-D,L-alanine hydrochloride and its four intermediates were synthesized, their structures were detenmined by IR,NMR,elementary analysis and melting point.
Description: Produces pharmaceutical products including doxopin hydrochloride, chlorprothixene and phenoxy benzamine and other intermediates. Company profile, and product and contact details.