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Volumn 40, Issue 8, 1999, Pages 1429-1432

Silicon tethered ring-closing metathesis reactions for self- and cross- coupling of alkenols

Author keywords

[No Author keywords available]

Indexed keywords

ALKENE DERIVATIVE; SILICON;

EID: 0033582741     PISSN: 00404039     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0040-4039(98)02697-5     Document Type: Article
Times cited : (86)

References (36)
  • 19
    • 0013577618 scopus 로고    scopus 로고
    • note
    • Other examples of tethered RCM reactions using substrates i-iv have been described. (Formula presented)
  • 26
    • 0013628341 scopus 로고    scopus 로고
    • note
    • 2 or pyridine in toluene (DMAP was used to catalyze the formation of the hindered ketal 4g) The yields of silaketal formation were: 4a (84%), 4b (82%), 4c (60%), 4d (55%), 4e (73%), 4f (60%), 4g (75%), 10a (60%), and 10b (60%).
  • 31
    • 0013605008 scopus 로고    scopus 로고
    • note
    • We have observed other instances in which slow addition of initiator carbene was advantageous and will report on these observations elsewhere.
  • 32
    • 0000681082 scopus 로고    scopus 로고
    • t-Butylethylene also shows a negligible rate of reaction with 2: Ulman, M.; Grubbs, R. H. Organometallics 1998, 17, 2484-2489.
    • (1998) Organometallics , vol.17 , pp. 2484-2489
    • Ulman, M.1    Grubbs, R.H.2
  • 33
    • 0013601164 scopus 로고    scopus 로고
    • note
    • 2.
  • 34
    • 0013613702 scopus 로고    scopus 로고
    • note
    • 1H NMR resonances for the minor isomer in each case indicated that it was a symmetrical structure, thereby ruling out the possibility of regioisomeric alkenes.
  • 36
    • 0030786787 scopus 로고    scopus 로고
    • These previous examples of formation of cyclic alkenes having one fewer carbon than expected were proposed to have been preceded by alkene isomerizalion. Our experimental evidence now directly supports that suggestion. Also, the earlier examples were obtained using a Schrock molybdenum carbene; the observations described here are to our knowledge the first example where a ruthenium carbene has induced this event.
    • b) Joe, D.; Overman, L. E. Tetrahedron Lett. 1997, 38, 8635-8638. These previous examples of formation of cyclic alkenes having one fewer carbon than expected were proposed to have been preceded by alkene isomerizalion. Our experimental evidence now directly supports that suggestion. Also, the earlier examples were obtained using a Schrock molybdenum carbene; the observations described here are to our knowledge the first example where a ruthenium carbene has induced this event.
    • (1997) Tetrahedron Lett. , vol.38 , pp. 8635-8638
    • Joe, D.1    Overman, L.E.2


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.