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Merck
CN

88545

1,1′-Thiocarbonyldiimidazole

≥95.0% (S)

Synonym(s):

TCDI

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About This Item

Empirical Formula (Hill Notation):
C7H6N4S
CAS Number:
Molecular Weight:
178.21
UNSPSC Code:
12352005
NACRES:
NA.22
PubChem Substance ID:
EC Number:
228-183-4
Beilstein/REAXYS Number:
609349
MDL number:
Assay:
≥95.0% (S)
Form:
powder
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Quality Segment

assay

≥95.0% (S)

form

powder

reaction suitability

reaction type: Carbonylations

mp

98-102 °C (lit.)

functional group

thiourea

storage temp.

2-8°C

SMILES string

S=C(n1ccnc1)n2ccnc2

InChI

1S/C7H6N4S/c12-7(10-3-1-8-5-10)11-4-2-9-6-11/h1-6H

InChI key

RAFNCPHFRHZCPS-UHFFFAOYSA-N

Application

  • 1,1′-Thiocarbonyldiimidazole (TCDI) is generally used as a reagent to carry out the deoxygenation of vicinal diols by forming cyclic thionocarbonate in Corey-Winter alkene synthesis.
  • It is used as a reagent in the enantioselective total synthesis of (+)-hapalindole Q, 12-epi-fischerindole U and welwitindolinone A.
  • It is also used in the preparation of trithiocarbonates, xanthates, and dithiocarbamates as chain transfer agents for the reversible addition fragmentation chain transfer and macromolecular design (RAFT/ MADIX) polymerization.

Other Notes

Reagent for the synthesis of thioamides; Used in a modified Corey-Winter olefin synthesis; Preparation of thiocarbamates from alcohols which undergo radical reactions with Bu3SnH-AIBN


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Warning

Hazard Classifications

Acute Tox. 4 Oral - Eye Irrit. 2 - Skin Irrit. 2

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)



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