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(R)-2,5-Dihydro-3,6-dimethoxy-2-isopropylpyrazine
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(R)-2,5-Dihydro-3,6-dimethoxy-2-isopropylpyrazine

CAS: 109838-85-9

Ref. 3D-FD04039

1g
159.00 €
2g
229.00 €
5g
403.00 €
10g
717.00 €
500mg
135.00 €
Estimated delivery in United States, on Tuesday 17 Dec 2024

Product Information

Name:
(R)-2,5-Dihydro-3,6-dimethoxy-2-isopropylpyrazine
Synonyms:
  • Schollkopf reagent
  • (R)-2-Isopropyl-3,6-dimethoxy-2,5-dihydropyrazine
  • (2R)-3,6-dimethoxy-2-(propan-2-yl)-2,5-dihydropyrazine
Description:

(R)-2,5-Dihydro-3,6-dimethoxy-2-isopropylpyrazine and its enantiomer (S)-2,5-Dihydro-3,6-dimethoxy-2-isopropylpyrazine are also known as Schöllkopf chiral auxiliaries or Schöllkopf reagents, and are used to produce optically pure α-amino acids via asymmetric synthesis. The Schöllkopf reagent can be deprotonated at the prochiral α-carbon, and the resulting enolate is trapped with electrophiles to yield adducts with high (typically >95% d.e.) diastereoselectivity. The enolate is essentially planar, and the steric bulk of the isopropyl group directs the incoming electrophile to attack from the opposite face, yielding trans adducts. A wide range of electrophiles including alkyl halides, alkyl sulfonates, acyl chlorides, aldehydes, ketones, epoxides, thioketones and enones can be used. Hydrolysis, typically under mild acidic conditions, yields the non-substituted amino acid with high (typically > 95 e.e.) enantiopurity.

Notice:
Our products are intended for lab use only. For any other use, please contact us.
Brand:
Biosynth
Long term storage:
Notes:

Chemical properties

Molecular weight:
184.24 g/mol
Formula:
C9H16N2O2
Purity:
Min. 98%
Color/Form:
Colorless Yellow Clear Liquid
InChI:
InChI=1S/C9H16N2O2/c1-6(2)8-9(13-4)10-5-7(11-8)12-3/h6,8H,5H2,1-4H3
InChI key:
InChIKey=FCFWEOGTZZPCTO-UHFFFAOYSA-N
SMILES:
COC1=NC(C(C)C)C(OC)=NC1
MDL:
Melting point:
Boiling point:
Flash point:
Density:
Concentration:
EINECS:
Merck:
HS code:

Hazard Info

UN Number:
EQ:
Class:
H Statements:
P Statements:
Forbidden to fly:
Hazard Info:
Packing Group:
LQ:

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