Diisopropylethylamine → HCID 89544568, compound

Participants

Role	Name	HCID	Charge
Reactant	Diisopropylethylamine	HCID 81531	—
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	(2R)-2-amino-3-((triphenylmethyl)sulfanyl)propanamide	HCID 44432703	—
Reactant	N2-[(4-{(2S)-3-(Allyloxy)-2-[(tert-butoxycarbonyl)amino]-3-oxopropyl}phenoxy)carbonyl]-N5-(tert-butoxycarbonyl)ornithine	HCID 89545074	—
Solvent	Dichloromethane	HCID 6344	—
Product	HCID 89544568	HCID 89544568	—

Reaction Conditions

Temperature	60 °C

Reaction Steps

1.50 g (2.59 mmol) of the compound from example 11A was dissolved in 60 ml dichloromethane. 0.940 g (2.59 mmol) S-Trityl-L-cysteinamide, 0.45 ml (2.60 mmol) N,N-diisopropylethylamine and 0.984 g (2.59 mmol) HATU were added. The reaction mixture was split into 3 portions. The portions were heated for 30 min in a sealed tube at 60° C. in a microwave synthesizer. From the combined reaction mixture the solvent was removed by rotary evaporation (approx. 40° C., approx. 200 mbar, approx. 30 min.). The raw product was dissolved in dichloromethane and chromatographed over approx. 400 ml silica gel. Solvents used were dichloromethane/ethyl acetate 2/1, dichloromethane/ethyl acetate 1/1. The product-containing fractions were combined and concentrated to dryness under reduced pressure. This gave 1.72 g (1.64 mmol, 63% of theory, 88% purity) of the desired product.

Provenance & Evidence

DOI	10.6084/m9.figshare.5104873.v1
Patent number	US09315543B2
Source dataset	uspto-grants-2016_04
ORD ID	ord-3dc10c7f0cfe4956a42554df825bc8a9
Source note	uspto-grants-2016_04