161314
3-Butyn-2-one
95%
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About This Item
Linear Formula:
HC≡CCOCH3
CAS Number:
Molecular Weight:
68.07
UNSPSC Code:
12352100
NACRES:
NA.22
PubChem Substance ID:
EC Number:
215-834-2
Beilstein/REAXYS Number:
605353
MDL number:
Assay:
95%
Quality Level
assay
95%
refractive index
n20/D 1.406 (lit.)
bp
85 °C (lit.)
density
0.87 g/mL at 25 °C (lit.)
functional group
ketone
SMILES string
CC(=O)C#C
InChI
1S/C4H4O/c1-3-4(2)5/h1H,2H3
InChI key
XRGPFNGLRSIPSA-UHFFFAOYSA-N
General description
3-Butyn-2-one undergoes asymmetric double-Michael reaction with ortho-tosylamidophenyl malonate catalyzed by chiral aminophosphines to yield indolines. It undergoes double Michael reaction with nitrogen-containing tethered diacid to give pipecolic acid derivatives.
Application
3-Butyn-2-one was used in the synthesis of clerodane diterpenoid (+/-)-sacacarin. It was used as substrate in stereoselective, conjugate arylation mediated by gallium(III) chloride leading to (E)-α,β-unsaturated ketones.
signalword
Danger
hcodes
Hazard Classifications
Acute Tox. 2 Oral - Eye Irrit. 2 - Flam. Liq. 2 - Skin Irrit. 2 - STOT SE 3
target_organs
Respiratory system
Storage Class
3 - Flammable liquids
wgk
WGK 3
flash_point_f
30.2 °F - closed cup
flash_point_c
-1 °C - closed cup
ppe
Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter
Regulatory Information
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R B Grossman et al.
Organic letters, 3(25), 4027-4030 (2001-12-12)
[reaction: see text] The putative structure of the naturally occurring clerodane diterpenoid (+/-)-sacacarin has been prepared in only 10 steps, six of which are C-C bond-forming steps, in a chemo-, regio-, and diastereoselective manner. The key part of the synthesis
Synlett, 809-809 (2007)
San N Khong et al.
Molecules (Basel, Switzerland), 17(5), 5626-5650 (2012-05-15)
The bisphosphine-catalyzed double-Michael addition of dinucleophiles to electron-deficient acetylenes is an efficient process for the synthesis of many nitrogen-containing heterocycles. Because the resulting heterocycles contain at least one stereogenic center, this double-Michael reaction would be even more useful if an
Global Trade Item Number
| SKU | GTIN |
|---|---|
| 161314-2.5ML | 04061838746245 |
| 161314-10ML | 04061838746238 |
| 444225-5MG | 04055977205268 |