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220817

Sigma-Aldrich

2-(Trimethylsilyl)-1,3-dithiane

≥99%

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About This Item

Empirical Formula (Hill Notation):
C7H16S2Si
CAS Number:
Molecular Weight:
192.42
Beilstein/REAXYS Number:
1616463
EC Number:
MDL number:
UNSPSC Code:
12352100
PubChem Substance ID:
NACRES:
NA.22

assay

≥99%

refractive index

n20/D 1.533 (lit.)

bp

54-55 °C/0.17 mmHg (lit.)

density

1.014 g/mL at 25 °C (lit.)

functional group

thioether

SMILES string

C[Si](C)(C)C1SCCCS1

InChI

1S/C7H16S2Si/c1-10(2,3)7-8-5-4-6-9-7/h7H,4-6H2,1-3H3

InChI key

BTTUMVHWIAXYPJ-UHFFFAOYSA-N

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General description

2-(Trimethylsilyl)-1,3-dithiane participates in Lewis base-catalyzed 1,3-dithiane addition to electrophiles such as carbonyl compounds and N-substituted aldimines. It undergoes novel diazo transfer reaction with tosyl azide in hexamethylphosphoramide-THF to yield 2-diazo-1,3-dithiane, which on decomposition yields formal carbene adducts. It is a versatile acyl anion equivalent.

Storage Class

10 - Combustible liquids

wgk_germany

WGK 3

flash_point_f

204.8 °F - closed cup

flash_point_c

96 °C - closed cup

ppe

Eyeshields, Gloves, multi-purpose combination respirator cartridge (US)


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Diazo transfer reaction of 2-(trimethylsilyl)-1, 3-dithiane with tosyl azide. Carbenic reactivity of transient 2-diazo-1, 3-dithiane.
Benati L, et al.
Tetrahedron, 53(27), 9269-9278 (1997)
Makoto Michida et al.
Chemistry, an Asian journal, 3(8-9), 1592-1600 (2008-06-21)
Lewis base-catalyzed 1,3-dithiane addition to electrophiles such as carbonyl compounds and N-substituted aldimines with 2-trimethylsilyl-1,3-dithiane (TMS-dithiane) is described. By the activation of the carbon-silicon bond in the presence of a Lewis base catalyst such as tetrabutylammonium phenoxide (PhONnBu(4)), a 1,3-dithiane
Smith, A. B., III; Boldi, A. M.
Journal of the American Chemical Society, 119, 6925-6925 (1997)
Amos B Smith et al.
Journal of the American Chemical Society, 125(47), 14435-14445 (2003-11-20)
The development, application, and advantages of a one-flask multicomponent dithiane linchpin coupling protocol, over the more conventional stepwise addition of dithiane anions to electrophiles leading to the rapid, efficient, and stereocontrolled assembly of highly functionalized intermediates for complex molecule synthesis

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