Detail of "5682-83-7"

CAS Number:
5682-83-7
Name:
Cyclohexanone,2-(phenylmethylene)-
Molecular Structure:
Formula:
C₁₃H₁₄O
Molecular Weight:
186.25
Synonyms:
Cyclohexanone,2-benzylidene- (6CI,7CI,8CI);2-Benzalcyclohexanone;2-Benzylidenecyclohexanone;NSC 145677;
EINECS:
227-144-9
Density:
1.09 g/cm³
Melting Point:
53-55 °C
Boiling Point:
330.2 °C at 760 mmHg
Flash Point:
136 °C
Hazard Symbols:
Xi
Risk Codes:
36/37/38
Safety:
26-36/37/39 Details

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Lengthening carbon chains: Lengthening carbon chains. Mukaiyama, Teruaki; Kitazawa, Eiichi (Sankyo Co., Ltd., Japan).Several substances are used for example 5682-83-7 and 62679-86-1 which are their cas registry numbers. Japan. Kokai JP 51125208 1 Nov 1976 Showa, 7 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: C07C047-00. APPLICATION: JP 75-25758 3 Mar 1975. DOCUMENT TYPE: Patent CA Section: 25 (Noncondensed Aromatic Compounds) .alpha.,.beta.-Unsatd. carbonyl compds. or 3-alkoxyacetals whose C chains had been lengthened were prepd. by reaction of tetraalkoxytitanium tetrahalotitanium, and aldehydes, followed by reaction with enol ethers, and treatment with H2O or alcs. Thus, 1 equiv. wt. (iso-PrO)4Ti was added to 217.1 mg BzH in CH2Cl2 at 0.degree. under Ar, 1 equiv. wt. TiCl4 added, 5 min later 246.8 mg 1-methoxycyclohexene in CH2Cl2 added and the mixt. stirred 1 h to give 71.4g 2-benzylidenecyclohexanone. Among 11 addnl. products prepd. were .beta.-isopropoxy-.delta.-phenylpentylaldehyde di-Et acetal, PhCh2CH2CH:CEtCHO, iso-PrOCHPhCHClCH(OEt)2, and iso-PrOCHPhCHEtCH(OEt)2. .

A cationic cyclopentannelation: A cationic cyclopentannelation. Tius, Marcus A.; Astrab, Donald P. (Dep. Chem., Univ.Several reagents such as 5682-83-7 is used here. Hawaii, Honolulu, HI 96822, USA). Tetrahedron Lett., 25(15), 1539-42 (English) 1984. CODEN: TELEAY. ISSN: 0040-4039. DOCUMENT TYPE: Journal CA Section: 24 (Alicyclic Compounds) Methylenecyclohexanones I (R = H, OSiMe3, SPh, R1 = CMe3;R = SPh, R1 = H; R2R3 = bond) were treated with BuLi-MeOCH2OCH:C:CH2 (1:1) to give the alkylation products I [R2 = H, R3 = C(OCH2OMe):C:CH2], which were cyclized using BF3.OEt2 to give 56-82% indanones II. Similar alkylation and cyclization of R4COCR5:CHOSiMe3 [R4 = Me, R5 = Me, Et; R4R5 = (CH2)6] gave 66-80% methylenecyclopentenones III. .