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Volumn 67, Issue 26, 2002, Pages 9346-9353

A computational study on addition of grignard reagents to carbonyl compounds

Author keywords

[No Author keywords available]

Indexed keywords

AGGREGATION NATURE; REACTION PATH;

EID: 0037184844     PISSN: 00223263     EISSN: None     Source Type: Journal    
DOI: 10.1021/jo026017c     Document Type: Article
Times cited : (59)

References (42)
  • 2
    • 0003529785 scopus 로고    scopus 로고
    • Silvermann, G. S., Rakita, P. E., Eds.; Marcel Dekker: New York
    • (b) Handbook of Grignard Reagents; Silvermann, G. S., Rakita, P. E., Eds.; Marcel Dekker: New York, 1996.
    • (1996) Handbook of Grignard Reagents
  • 3
    • 0003863495 scopus 로고    scopus 로고
    • Richey, H. G., Jr., Ed.; Wiley: New York
    • (c) Grignard Reagents New Developments, Richey, H. G., Jr., Ed.; Wiley: New York, 2000.
    • (2000) Grignard Reagents New Developments
  • 29
    • 0345890211 scopus 로고    scopus 로고
    • note
    • 2Mg bridged isomers were confirmed to be less stable than 6 or 13, respectively.
  • 36
    • 0345890210 scopus 로고    scopus 로고
    • note
    • When the Mg - O distance is decreased, the Mg - C distance is enlarged gradually. The partial optimizations with a fixed Mg - O distance were repeated, and a complex potential surface with various extremely shallow energy minima was found. A local minimum with smaller relative energy than that (=8.5 kcal/mol) of 23 (TS) was sought. However, the attempted geometry converged to that of 24 probably due to the complex potential curve and spin contamination, and 24 was calculated to be slightly less stable than 23 (TS).
  • 37
    • 1542415010 scopus 로고
    • The second Mg - O approach is possible via a route corresponding to 8 → 10 → 12 in Figure S2. A symmetric singlet-spin radical geometry 25 was obtained. Since four radical centers are distant with each other, triplet and quartet spin states have almost the same energies as that of the open singlet (25). The triplet or quartet radicals have also the same symmetric structures as that of 25. The triplet or quartet radicals would be related to intermediates detected by ESR spectroscopy (ref 1h and (a) Maruyama, K.; Hayashi, J.; Takagiri, T. Chem. Lett. 1987, 731. (b) Maruyama, K. Bull. Chem. Soc. Jpn. 1964, 37, 897).
    • (1987) Chem. Lett. , pp. 731
    • Maruyama, K.1    Hayashi, J.2    Takagiri, T.3
  • 38
    • 0346521080 scopus 로고
    • The second Mg - O approach is possible via a route corresponding to 8 → 10 → 12 in Figure S2. A symmetric singlet-spin radical geometry 25 was obtained. Since four radical centers are distant with each other, triplet and quartet spin states have almost the same energies as that of the open singlet (25). The triplet or quartet radicals have also the same symmetric structures as that of 25. The triplet or quartet radicals would be related to intermediates detected by ESR spectroscopy (ref 1h and (a) Maruyama, K.; Hayashi, J.; Takagiri, T. Chem. Lett. 1987, 731. (b) Maruyama, K. Bull. Chem. Soc. Jpn. 1964, 37, 897).
    • (1964) Bull. Chem. Soc. Jpn. , vol.37 , pp. 897
    • Maruyama, K.1
  • 40
    • 0346521082 scopus 로고
    • Wiley & Sons: New York
    • (b) Coburn, E. R. Organic Synthesis; Wiley & Sons: New York, 1955; Collect. Vol. No. III, p 696.
    • (1955) Organic Synthesis , vol.3 , pp. 696
    • Coburn, E.R.1
  • 41
    • 0345890209 scopus 로고
    • Wiley & Sons: New York
    • (c) Munch-Petersen, J. Organic Synthesis; Wiley & Sons: New York, 1973; Collect. Vol. No. V, p 762.
    • (1973) Organic Synthesis , vol.5 , pp. 762
    • Munch-Petersen, J.1


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.