An unusual example of a 1,1-cycloaddition reaction of a diazoalkane
作者:Albert Padwa、Hao Ku
DOI:10.1016/s0040-4039(00)78825-3
日期:1980.1
Thermolysis of the sodium salt of E-1,4-diphenyl-3-buten-1-one N-tosylhydrazone gave rise to the corresponding diazoalkane which undergoes a subsequent 1,1-cycloaddition reaction to produce 3,6-diphenyl-1,2-diazabicyclo[3.1.0]hex-2-ene.
Silylboryl reagents for organic synthesis: 1-silyl-1-boryl-2-alkenes (2) were prepared efficiently by gem-silylborylation of α-chloroallyllithium compounds from (dimethylphenylsilyl)(pinacolato)borane (1; see scheme, LDA=lithium diisopropylamide) and were demonstrated to allylate acetals and aldehydes in the presence of a Lewis acid to produce (E)-4-alkoxy-alkenylboronates. Heating the reagents with aldehydes in the absence of Lewis acid afforded (Z)-4-hydroxy-alkenylsilanes stereospecifically.
Engels,R. et al., Justus Liebigs Annalen der Chemie, 1977, p. 204 - 224
作者:Engels,R. et al.
DOI:——
日期:——
PADWA A.; KU H., TETRAHEDRON LETT., 1980, 21, NO 11, 1009-1012
作者:PADWA A.、 KU H.
DOI:——
日期:——
PADWA, A.;RODRIGUEZ, A.;TOHIDI, MAHROKH;FUKUNAGA, TADAMICHI, J. AMER. CHEM. SOC., 1983, 105, N 4, 933-943