메뉴 건너뛰기




Volumn 118, Issue 45, 1996, Pages 11313-11314

Generation and study of the reactivity of α-ammonium distonic radical cations in solution

Author keywords

[No Author keywords available]

Indexed keywords

PIPERIDINE DERIVATIVE; PYRROLIDINE DERIVATIVE; QUATERNARY AMMONIUM DERIVATIVE;

EID: 0029909436     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja9626547     Document Type: Article
Times cited : (19)

References (26)
  • 6
    • 33646964639 scopus 로고    scopus 로고
    • note
    • Free radical chemistry of related a-sulfinylmethyl and α-sulfonylmethyl radicals has been recently been reported,7'8 and since submission of this paper, a brief report regarding synthetic use of α-ammoniomethyl radicals has appeared.
  • 10
    • 33646959804 scopus 로고    scopus 로고
    • note
    • 13C NMR, HRMS, and elemental analysis. All products formed in the competition experiments were isolated and fully characterized in the same manner.
  • 13
    • 33646955544 scopus 로고    scopus 로고
    • note
    • - counterion, from the solvent cage surrounding the ammonium substituent, or simply from the neopentyl-like nature of 2-a. Future studies should allow us to distinguish these possibilities, as well as to indicate why addition to ethyl vinyl ether (IP = 8.8 eV), but not to styrène (IP (ionization potential ) = 8.43 eV), was observed to occur.
  • 17
    • 33646959071 scopus 로고    scopus 로고
    • note
    • Distonic radical cations 2-c-e were generated upon 266 nm photolysis of the corresponding iodides in methanol using a Lumonics HY-750 Nd:YAG laser (8 ns pulse width; ca. 45 mJ/pulse). The UV-vis computer-controlled detection system has been described previously.18 The kinetics of the ring closure reactions of 2-d,e were studied at 320 and 335 nm, repectively (formation of products). The temperature was varied from ca. -60 to +20°C.
  • 19
    • 33847435126 scopus 로고    scopus 로고
    • All stated errors correspond to 2a. They include both random and propagated errors, as appropriate.
    • All stated errors correspond to 2a. They include both random and propagated errors, as appropriate.
  • 25
    • 33847462928 scopus 로고    scopus 로고
    • • should be destabilized by only ∼1.3 kcal/mol.24
    • • should be destabilized by only ∼1.3 kcal/mol.24


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.