Triethylamine → 2-Methylpentane

Participants

Role	Name	HCID	Charge
Reactant	Triethylamine	HCID 8471	—
Reactant	2-Methyl-1,3-benzothiazole-5-carboxylic acid	HCID 649953	—
Reactant	Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)	HCID 9886157	—
Reactant	9-((4-(2-(tert-Butyldimethylsilyloxy)ethyl)thiophen-2-yl)methyl)-1-oxa-4,9-diazaspiro[5.5]undecane	HCID 57989113	—
Solvent	Dimethylformamide	HCID 6228	—
Product	2-Methylpentane	HCID 7892	—
Product	(9-((4-(2-(Tert-butyldimethylsilyloxy)ethyl)thiophen-2-yl)methyl)-1-oxa-4,9-diazaspiro[5.5]undecan-4-yl)(2-methylbenzo[d]thiazol-5-yl)methanone	HCID 57989353	—

Reaction Steps

HATU (0.333 g) was added to stirred solution of 2-methylbenzo[d]thiazole-5-carboxylic acid (0.17 g), 9-((4-(2-(tert-butyldimethylsilyloxy)ethyl)thiophen-2-yl)methyl)-1-oxa-4,9-diazaspiro[5.5]undecane (example 43, step b) (0.3 g) and triethylamine (0.407 mL) in DMF (3 mL). After 1 h, the reaction mixture was partitioned between water and ethyl acetate. The ethyl acetate layer was washed twice with water, once with brine, dried over magnesium sulphate, filtered and evaporated in vacuo. Purification by silica gel chromatography eluting with ethyl acetate:isohexane:triethylamine, 2:8:1 gave the subtitled compound as a gum. Yield 0.36 g.

Provenance & Evidence

DOI	10.6084/m9.figshare.5104873.v1
Patent number	US08148373B2
Source dataset	uspto-grants-2012_04
ORD ID	ord-95fcf5b6ac0043e7b5e297c4bacfc62b
Source note	uspto-grants-2012_04