Intermediate of Fosnetupitant CAS NO.229625-50-7

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Product Name:	Di-tert-butyl Chloromethyl Phosphate
Synonyms:	Di-tert-butyl Chloromethyl Phosphate;PHOSPHORIC ACI DI-T-BUTYL EXTER CHLOROMETHYL ESTER;Phosphoric acid, chloroMethyl bis(1,1-diMethylethyl) ester;Phosphoric acid di-tert-butyl chloromethyl ester;Chloromethyl di-tert-butyl phosphate;Phosphoric acid ditert-butyl ester chloromethyl ester;Di-tert-butyl (chloromethyl) phosphate (stabilized with potassium carbonate);Fostemsavir-SM
CAS:	229625-50-7
MF:	C9H20ClO4P
MW:	258.68
EINECS:
Product Categories:	intermediates;SiChem
Mol File:	229625-50-7.mol

Description	Di-tert-butyl (chloromethyl) phosphate has become one of the most common reagents to prepare phosphon-oxymethyl pro-drugs, generally by direct alkylation of hydroxyl or amino groups. Its synthesis was first reported in 1999 via a reaction of di-tert-butyl tetramethylammonium phosphate with chloroiodomethane. This approach required the use of the corresponding tetramethylammonium phosphate and a vast excess (>11 equiv) of chloroiodomethane to minimize the formation of tetra-tert-butyl methylene bisphosphate[1].
Uses	Used as an intermediate for laboratory research.
Synthesis	Di-tert-butyl (chloromethyl) phosphate, a key compound in the formation of many phosphon-oxymethyl pro-drugs, is prepared by reacting chloromethyl chlorosulfate (CMCS) with di-tert-butyl potassium phosphate (DTBPP) .
References	[1] Bin Zheng*. “Development of Efficient Processes for the Preparation of Di-tert-butyl Potassium Phosphate and Di-tert-butyl (Chloromethyl) Phosphate.” Organic Process Research & Development 18 5 (2014): 636–642.