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Volumn 63, Issue 26, 1998, Pages 9924-9931

An efficient photo-SET-induced cleavage of dithiane-carbonyl adducts and its relevance to the development of photoremovable protecting groups for ketones and aldehydes

Author keywords

[No Author keywords available]

Indexed keywords

5ALPHA CHOLESTAN 3 ONE; ACETOPHENONE; ALDEHYDE; BENZALDEHYDE; BENZOPHENONE; CARBONYL DERIVATIVE; CARBONYLDITHIANE DERIVATIVE; CYCLOHEXANONE; HEPTYL ALDEHYDE; KETONE; PROPIONALDEHYDE; UNCLASSIFIED DRUG;

EID: 0032567489     PISSN: 00223263     EISSN: None     Source Type: Journal    
DOI: 10.1021/jo981697y     Document Type: Article
Times cited : (63)

References (78)
  • 14
    • 20644457774 scopus 로고    scopus 로고
    • Liu, X. 1992, 450 pp.
    • (n) Liu, X. 1992, 450 pp.
  • 65
    • 33847508800 scopus 로고
    • Chapman, N. B., Shorter, J., Eds.; Plenum Press: New York, Chapter 10.
    • Extner, O. In Correlation Analysis in Chemistry; Chapman, N. B., Shorter, J., Eds.; Plenum Press: New York, 1978; Chapter 10.
    • (1978) Correlation Analysis in Chemistry
    • Extner, O.1
  • 69
    • 20644433990 scopus 로고    scopus 로고
    • note
    • As we tried to optimize the reaction yield, we found the following. Upon extended irradiation (over 4 h) GC-MS analysis of the reaction mixture showed a growing peak of a secondary photoproduct with a molecular ion of 272 and a fragmentation pattern consistent with the 4-formyltriphenylmethane structure. It is conceivable that under reaction conditions trityl alcohol 18 photochemically ionizes to produce the corresponding trityl cation, which is subsequently reduced to the triphenylmethane. We also cannot rule out a radical mechanism for such reduction.
  • 72
    • 33847530023 scopus 로고    scopus 로고
    • The reaction with aldehydes was normally completed within 2 h. More hindered and/or aromatic ketones required 12+ h in the freezer to react.
    • The reaction with aldehydes was normally completed within 2 h. More hindered and/or aromatic ketones required 12+ h in the freezer to react.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.