Triphosgene → 1-(8-Bromo-4,5-dihydrothiazolo[4,5-d]benzo[b]oxepin-2-yl)-5,5-dimethylimidazolidin-2-one

Participants

Role	Name	HCID	Charge
Reactant	Triphosgene	HCID 94429	—
Reactant	N2-(8-bromo-4,5-dihydrothiazolo[4,5-d]benzo[b]oxepin-2-yl)-2-methylpropane-1,2-diamine hydrobromide	HCID 86652327	—
Solvent	Tetrahydrofuran	HCID 8028	—
Product	1-(8-Bromo-4,5-dihydrothiazolo[4,5-d]benzo[b]oxepin-2-yl)-5,5-dimethylimidazolidin-2-one	HCID 58204274	51%

Reaction Steps

Following the Example 356, N2-(8-bromo-4,5-dihydrothiazolo[4,5-d]benzo[b]oxepin-2-yl)-2-methylpropane-1,2-diamine hydrobromide was reacted with triphosgene in tetrahydrofuran and purified on silicagel column eluting with 50% of ethyl acetate in heptane to give 1-(8-bromo-4,5-dihydrothiazolo[4,5-d]benzo[b]oxepin-2-yl)-5,5-dimethylimidazolidin-2-one. Yield 51%. MS(ESI+): 393.9

Provenance & Evidence

DOI	10.6084/m9.figshare.5104873.v1
Patent number	US09175009B2
Source dataset	uspto-grants-2015_11
ORD ID	ord-d34321bd72194924b9ac0f14dc833b82
Source note	uspto-grants-2015_11