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301345

Sigma-Aldrich

3-Chloro-3-methyl-1-butyne

97%

Sinonimo/i:

α,α-Dimethylpropargyl chloride, 2-Chloro-2-methyl-3-butyne, 2-Methyl-2-chloro-3-butyne, 2-Methyl-3-butyn-2-yl chloride, 3-Chloro-3-methyl-1-butyne, 3-Chloro-3-methylbutyne, 3-Methyl-1-butyn-3-yl chloride, 3-Methyl-3-chloro-1-butyne, 3-Methyl-3-chlorobutyne

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About This Item

Formula condensata:
ClC(CH3)2C≡CH
Numero CAS:
1111-97-3
Peso molecolare:
102.56
Numero CE:
214-188-9
Numero MDL:
MFCD00190221
Codice UNSPSC:
12352100
ID PubChem:
24858181
NACRES:
NA.22

Livello qualitativo

100

Saggio

97%

Forma fisica

liquid

Indice di rifrazione

n20/D 1.418 (lit.)

P. eboll.

73-75 °C (lit.)

Punto di fusione

−61 °C (lit.)

Densità

0.913 g/mL at 25 °C (lit.)

Gruppo funzionale

alkyl halide
chloro

Temperatura di conservazione

2-8°C

Stringa SMILE

CC(C)(Cl)C#C

InChI

1S/C5H7Cl/c1-4-5(2,3)6/h1H,2-3H3
QSILYWCNPOLKPN-UHFFFAOYSA-N

Applicazioni

3-Chloro-3-methyl-1-butyne was used in preparation of:
  • series of benzo[b]pyrano[2,3-i]xanthen-6-ones and benzo[b]pyrano[3,2-h]xanthen-7-ones
  • 6-hydroxy-3,3-dimethyl-3H,7H-benzo[a]pyrano[3,2-h]xanthen-7-one
  • 5-hydroxy-2,2-dimethyl-2H,6H-benzo[a]pyrano[2,3-i]xanthen-6-one
  • 3,3-dimethyl-3Hbenzofuro[3,2-f][1]-benzopyran

Accessorio

N° Catalogo
Descrizione
Determinazione del prezzo

Pittogrammi

FlameExclamation mark
GHS02,GHS07

Avvertenze

Danger

Indicazioni di pericolo

H225,H302 + H312 + H332

Classi di pericolo

Acute Tox. 4 Dermal - Acute Tox. 4 Inhalation - Acute Tox. 4 Oral - Flam. Liq. 2

Codice della classe di stoccaggio

3 - Flammable liquids

Classe di pericolosità dell'acqua (WGK)

WGK 3

Punto d’infiammabilità (°F)

39.2 °F - closed cup

Punto d’infiammabilità (°C)

4 °C - closed cup

Dispositivi di protezione individuale

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter

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Certificati d'analisi (COA)

Lot/Batch Number
MKCP6061
MKCN1253
MKCL9681
MKBV4870V
MKBT0947V

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Chavalit Sittisombut et al.
Chemical & pharmaceutical bulletin, 54(8), 1113-1118 (2006-08-02)
Condensation of 2-hydroxy-1-naphthalenecarboxylic acid with phloroglucinol afforded 9,11-dihydroxy-12H-benzo[a]xanthen-12-one (6). Construction of an additional dimethylpyran ring onto this skeleton, by alkylation with 3-chloro-3-methyl-1-butyne followed by Claisen rearrangement, gave access to 6-hydroxy-3,3-dimethyl-3H,7H-benzo[a]pyrano[3,2-h]xanthen-7-one (12) and 5-hydroxy-2,2-dimethyl-2H,6H-benzo[a]pyrano[2,3-i]xanthen-6-one (13), which were methylated into 6-methoxy-3,3-dimethyl-3H,7H-benzo[a]pyrano[3,2-h]xanthen-7-one (14)
Soizic Prado et al.
Bioorganic & medicinal chemistry, 14(15), 5423-5428 (2006-04-18)
Alkylation of 2-hydroxydibenzofuran with 3-chloro-3-methyl-1-butyne, followed by Claisen rearrangement, gave access to 3,3-dimethyl-3Hbenzofuro[3,2-f][1]-benzopyran. Several derivatives modified at the pyran 1,2-double bond were prepared, including the corresponding dihydro compound and (+/-)-cis-diol, which was converted into diacetate and cyclic carbonate upon acylation.
C Sittisombut et al.
Chemical & pharmaceutical bulletin, 49(6), 675-679 (2001-06-20)
Condensation of 3-hydroxy-2-naphthalenecarboxylic acid with phloroglucinol afforded 1,3-dihydroxy-12H-benzo[b]xanthen-12-one. Construction of an additional dimethylpyran ring onto this skeleton, by alkylation with 3-chloro-3-methyl-1-butyne followed by Claisen rearrangement, gave access to a series of benzo[b]pyrano[2,3-i]xanthen-6-ones and benzo[b]pyrano[3,2-h]xanthen-7-ones related to psorospermine and benzo[b]acronycine. In

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