942296-13-1

Basic information

• Product Name: ethyl (D-erythro)-3-(4-chlorophenylcarbamoyloxy)-2,2-difluoro-3-(2,2-dimethyl-dioxalane-4-yl)propionate
• Synonyms: ethyl (D-erythro)-3-(4-chlorophenylcarbamoyloxy)-2,2-difluoro-3-(2,2-dimethyl-dioxalane-4-yl)propionate
• CAS NO: 942296-13-1
• Molecular Weight: 407.799
• Mol File: 942296-13-1.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: ethyl (D-erythro)-3-(4-chlorophenylcarbamoyloxy)-2,2-difluoro-3-(2,2-dimethyl-dioxalane-4-yl)propionate(CAS DataBase Reference)
• NIST Chemistry Reference: ethyl (D-erythro)-3-(4-chlorophenylcarbamoyloxy)-2,2-difluoro-3-(2,2-dimethyl-dioxalane-4-yl)propionate(942296-13-1)
• EPA Substance Registry System: ethyl (D-erythro)-3-(4-chlorophenylcarbamoyloxy)-2,2-difluoro-3-(2,2-dimethyl-dioxalane-4-yl)propionate(942296-13-1)

Safety Data

• Hazardous Substances Data: 942296-13-1(Hazardous Substances Data)

Upstream product

• 104-12-1 p-chlorphenylisocyanate 
• 928797-50-6 ethyl (3R,S)-2,2-difluoro-3-hydroxy-(2,2-dimethyldioxolpent-4-yl)propionate 

Downstream Products

• 151900-33-3 1,1-diethyloxy-3-(4-chlorophenyl)urea 
• 95058-92-7 (erytro) ethyl-3-(2,2-dimethyl-1,3-dioxolan-4-yl)-2,2-difluoro-3-hydroxy propionate 

Relevant articles and documents

PROCESS FOR PREPARING GEMCITABINE AND ASSOCIATED INTERMEDIATES

Provided is a process for preparing gemcitabine and intermediates useful in the production of gemcitabine. Exemplary intermediates include mixtures of D-erythro and D-threo diastereomers of ethyl 3-(N-carbamoyloxy)-2,2-difluoro-3-(2,2-dimethyldioxolan-4-yl)propionates, from which a preferred isomer can be separated, e.g., by selective crystallization, in accordance with the invention. Also provided are novel alkyl (D-erythro)-3-hydroxy-2,2-difluoro-3-(2,2-dimethyldioxolan-4-yl)propionate intermediates, and novel ribo lactones, which can be used for producing gemcitabine.