Home > Chiral Compounds> (2S)-(+)-2,5-Dihydro-3,6-dimethoxy-2-isopropylpyrazine

(2S)-(+)-2,5-Dihydro-3,6-dimethoxy-2-isopropylpyrazine

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Origin: China

Cas No: 78342-42-4

Specification: 99%min

Min order Quantity: 1 /kg

Supply Ability: 80 mt/month

Lead time: 7 days for OEM, 3 days for ready goods

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Product Description

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CAS No.: 78342-42-4 Formula: C9H16N2O2 Molecular Weight: 184.23600

Description

(S)-2-Isopropyl-3,6-dimethoxy-2,5-dihydropyrazine is a Schöllkopf reagent used in the asymmetric synthesis of chiral amino acids.

Basic Info

Chemical Name	(2S)-(+)-2,5-Dihydro-3,6-dimethoxy-2-isopropylpyrazine
Synonyms	(2S)-3,6-dimethoxy-2-propan-2-yl-2,5-dihydropyrazine;
CAS No.	78342-42-4
Molecular Formula	C9H16N2O2
Molecular Weight	184.23600
PSA	43.18000
LogP	-0.01440

Properties

Appearance & Physical State	light yellow-green liquid.
Density	1.028
Boiling Point	245.2ºC at 760 mmHg
Flash Point	85.6ºC
Refractive Index	1.503

Safety Info

Safety Statements	S23-S24/25
HS Code	2933990090
WGK Germany	3
Risk Statements	R22
Hazard Codes	Xn

Synthesis Route

TRIMETHYLOXONIUM TETRAFLUOROBORATE+(3S)-3-propan-2-ylpiperazine-2,5-dione→(2S)-(+)-2,5-Dihydro-3,6-dimethoxy-2-isopropylpyrazine
L-valine→(2S)-(+)-2,5-Dihydro-3,6-dimethoxy-2-isopropylpyrazine
(4S)-4-propan-2-yl-1,3-oxazolidine-2,5-dione→(2S)-(+)-2,5-Dihydro-3,6-dimethoxy-2-isopropylpyrazine

Precursor

(S)-2-(Boc-amino)-3-methylbutyric acid
(3S)-3-propan-2-ylpiperazine-2,5-dione
L-valine
(4S)-4-propan-2-yl-1,3-oxazolidine-2,5-dione

Downstream Product

(S)-2-Amino-3-methylbutanoic acid hydrochloride
L-Valine methyl ester hydrochloride
methyl (2S)-3-methyl-2-[(2-methylpropan-2-yl)oxycarbonylamino]butanoate
(2R,5S)-5-isopropyl-3,6-dimethoxy-2-propargyl-2,5-dihydropyrazine

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