Schollkopf reagent

Suppliers

Names

[ CAS No. ]:
78342-42-4

[ Name ]:
Schollkopf reagent

[Synonym ]:
(2R)-2-Isopropyl-3,6-dimethoxy-2,5-dihydropyrazine
(R)-Schollkopf Reagent
(2S)-2-Isopropyl-3,6-dimethoxy-2,5-dihydropyrazine
(2S)-3,6-dimethoxy-2-(propan-2-yl)-2,5-dihydropyrazine
Schollkopf reagent
Pyrazine, 2,5-dihydro-3,6-dimethoxy-2-(1-methylethyl)-, (2S)-
(R)-(-)-2-Isopropyl-3,6-dimethoxy-2,5-dihydropyrazine
Pyrazine, 2,5-dihydro-3,6-dimethoxy-2-(1-methylethyl)-, (2R)-
(2S)-3,6-dimethoxy-2-propan-2-yl-2,5-dihydropyrazine
(2R)-3,6-dimethoxy-2-(propan-2-yl)-2,5-dihydropyrazine
(R)-2,5-Dihydro-3,6-dimethoxy-2-isopropylpyrazine
MFCD00066229

Chemical & Physical Properties

[ Density]:
1.1±0.1 g/cm3

[ Boiling Point ]:
245.2±33.0 °C at 760 mmHg

[ Molecular Formula ]:
C9H16N2O2

[ Molecular Weight ]:
184.236

[ Flash Point ]:
85.6±17.9 °C

[ Exact Mass ]:
184.121185

[ PSA ]:
43.18000

[ LogP ]:
-0.40

[ Vapour Pressure ]:
0.0±0.5 mmHg at 25°C

[ Index of Refraction ]:
1.503

MSDS

Safety Information

[ Personal Protective Equipment ]:
Eyeshields;Gloves

[ Hazard Codes ]:
Xn: Harmful;

[ Risk Phrases ]:
R22

[ Safety Phrases ]:
S23-S24/25-S37/39-S26

[ RIDADR ]:
NONH for all modes of transport

[ WGK Germany ]:
3

[ HS Code ]:
2933990090

Synthetic Route

Precursor & DownStream

Precursor

  • Trimethyloxonium tetrafluoroborate
  • (S)-3-Isopropyl-2,5-Piperazinedione
  • L-Valine
  • (4S)-4-Isopropyl-1,3-oxazolidine-2,5-dione
  • Boc-L-Valine
  • Boc-Val-O-COO-isoBu
  • For-Val-OH
  • N-L-valyl-glycine methyl ester
  • ethyl L-valylglycinate

DownStream

  • L-Valine hydrochloride
  • boc-val-ome
  • H-Val-OmeHCl

Customs

[ HS Code ]: 2933990090

[ Summary ]:
2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%


Related Compounds

  • Schollkopf reagent
  • Eschenmoser's reagent
  • Comins' Reagent
  • Cornforth reagent
  • Stang's reagent
  • Hendrickson's reagent