Reactions of substituted pyridines with electrophilic boranes
Caputo CB, Geier SJ, Winkelhaus D, Mitzel NW, Vukotic VN, Loeb SJ, Stephan DW (2012)
Dalton Transactions 41(7): 2131-2139.
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Autor*in
Caputo, Christopher B.;
Geier, Stephen J.;
Winkelhaus, DanielUniBi;
Mitzel, Norbert W.UniBi;
Vukotic, V. Nicolas;
Loeb, Stephen J.;
Stephan, Douglas W.
Einrichtung
Abstract / Bemerkung
The lutidine derivative (2,6-Me(2))(4-Bpin)C(5)H(2)N when combined with B(C(6)F(5))(3) yields a frustrated Lewis pair (FLP) which reacts with H(2) to give the salt [(2,6-Me(2))(4-Bpin)C(5)H(2)NH][HB(C(6)F(5))(3)] (1). Similarly 2,2 '-(C(5)H(2)(4,6-Me(2))N)(2) and (4,4 '-(C(5)H(2)(4,6-Me(2))N)(2) were also combined with B(C(6)F(5))(3) and exposed to H(2) to give [(2,2 '-HN(2,6-Me(2))C(5)H(2)C(5)H(2)(4,6-Me(2))N][HB(C(6)F(5))(3)] (2) and [(4,4 '-HN(2,6-Me(2))C(5)H(2)C(5)H(2)(2,6-Me(2))N] [HB(C(6)F(5))(3)] (3), respectively. The mono-pyridine-N-oxide 4,4 '-N(2,6-Me(2))C(5)H(2)C(5)H(2)(2,6-Me(2))NO formed the adduct (4,4 '-N(2,6-Me(2))C(5)H(2)C(5)H(2)(2,6-Me(2))NO)(B(C(6)F(5))(3)) (4) which reacts further with B(C(6)F(5))(3) and H(2) to give [(4,4 '-HN(2,6-Me(2))C(5)H(2)C(5)H(2)(2,6-Me(2)) NO)B(C(6)F(5))(3)] [HB(C(6)F(5))(3)] (5). In a related sense, 2-amino-6-CF(3)-C(5)H(3)N reacts with B(C(6)F(5))(3) to give (C(5)H(3)(6-CF(3))NH)(2-NH(B(C(6)F(5))(3))) (6). Similarly, the species, 2-amino-quinoline, 8-amino-quinoline and 2-hydroxy-6-methyl-pyridine were reacted with B(C(6)F(5))(3) to give the products as (C(9)H(6)NH)(2-NHB(C(6)F(5))(3)) (7), (C(9)H(6)N)(8-NH(2)B(C(6)F(5))(3)) (8) and (C(5)H(3)(6-Me)NH)(2-OB(C(6)F(5))(3)) (9), respectively; while 2-amino-6-picoline, 2-amino-6-CF(3)-pyridine, 2-amino-quinoline, 8-amino-quinoline and 2-hydroxy-6-methyl-pyridine react with ClB(C(6)F(5))(2) to give the species (C(5)H(3)(6-R)NH)(2-NH-(ClB(C(6)F(5))(2))) (R = Me (10), R = CF(3) (11)) (C(9)H(6)NH)(2-NH(ClB(C(6)F(5))(2))) (12), (C(9)H(6)N)(8-NH(2)ClB(C(6)F(5))(2)) (13) and (C(5)H(3)(6-Me)NH)(2-OClB(C(6)F(5))(2)) (14), respectively. In a similar manner, 2-amino-6-picoline and 2-amino-quinoline react with B(C(6)F(5))(2)H to give (C(5)H(3)(6-Me)NH)(2-NH(HB(C(6)F(5))(2))) (15) and (C(9)H(6)NH)(2-NH(HB(C(6)F(5))(2))) (16). The corresponding reaction of 8-amino-quinoline yields (C(9)H(6)N)(8-NHB(C(6)F(5))(2)) (17). In a similar fashion, reaction of 2-amino-6-CF3-pyridine resulted in the formation of (18) formulated as (C(5)H(3)(6-CF(3))N)-(2-NH(B(C(6)F(5))(2)). Finally, treatment of 15 with iPrMgCl gave (C(9)H(6)N)(2-NH(B(C(6)F(5))(2))) (19). Crystallographic studies of 1, 2, 4, 6, 7, 10, 11, 12 and 15 are reported.
Erscheinungsjahr
2012
Zeitschriftentitel
Dalton Transactions
Band
41
Ausgabe
7
Seite(n)
2131-2139
ISSN
1477-9226
eISSN
1477-9234
Page URI
https://pub.uni-bielefeld.de/record/2474495
Zitieren
Caputo CB, Geier SJ, Winkelhaus D, et al. Reactions of substituted pyridines with electrophilic boranes. Dalton Transactions. 2012;41(7):2131-2139.
Caputo, C. B., Geier, S. J., Winkelhaus, D., Mitzel, N. W., Vukotic, V. N., Loeb, S. J., & Stephan, D. W. (2012). Reactions of substituted pyridines with electrophilic boranes. Dalton Transactions, 41(7), 2131-2139. doi:10.1039/c1dt11820j
Caputo, Christopher B., Geier, Stephen J., Winkelhaus, Daniel, Mitzel, Norbert W., Vukotic, V. Nicolas, Loeb, Stephen J., and Stephan, Douglas W. 2012. “Reactions of substituted pyridines with electrophilic boranes”. Dalton Transactions 41 (7): 2131-2139.
Caputo, C. B., Geier, S. J., Winkelhaus, D., Mitzel, N. W., Vukotic, V. N., Loeb, S. J., and Stephan, D. W. (2012). Reactions of substituted pyridines with electrophilic boranes. Dalton Transactions 41, 2131-2139.
Caputo, C.B., et al., 2012. Reactions of substituted pyridines with electrophilic boranes. Dalton Transactions, 41(7), p 2131-2139.
C.B. Caputo, et al., “Reactions of substituted pyridines with electrophilic boranes”, Dalton Transactions, vol. 41, 2012, pp. 2131-2139.
Caputo, C.B., Geier, S.J., Winkelhaus, D., Mitzel, N.W., Vukotic, V.N., Loeb, S.J., Stephan, D.W.: Reactions of substituted pyridines with electrophilic boranes. Dalton Transactions. 41, 2131-2139 (2012).
Caputo, Christopher B., Geier, Stephen J., Winkelhaus, Daniel, Mitzel, Norbert W., Vukotic, V. Nicolas, Loeb, Stephen J., and Stephan, Douglas W. “Reactions of substituted pyridines with electrophilic boranes”. Dalton Transactions 41.7 (2012): 2131-2139.
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