Synthesis of epoxyoxirano- and epoxydihydroxyisoindolones
作者:F. I. Zubkov、V. P. Zaytsev、I. K. Airiyan、V. D. Golubev、E. S. Puzikova、E. A. Sorokina、E. V. Nikitina、A. V. Varlamov
DOI:10.1007/s11172-012-0087-5
日期:2012.3
1-Oxo-3a,6-epoxyisoindolones oxidized with potassium permanganate to give 4,5-dihydroxy-3a,6-epoxyisoindolones, while oxidation with peroxyformic acid or 3-chloroperoxybenzoic acid yielded 2,6a-epoxyoxirano[e]isoindolones. Oxidation proceeded with selective formation of exo-cis-adducts.
Continuous-flow catalytic hydrogenation of 3a,6-epoxyisoindoles
作者:V. P. Zaytsev、F. I. Zubkov、D. F. Mertsalov、D. N. Orlova、E. A. Sorokina、E. V. Nikitina、A. V. Varlamov
DOI:10.1007/s11172-015-0829-2
日期:2015.1
Selective catalytic (10% Pd/C) hydrogenation of the double bond in the oxabicyclo[2.2.1]heptene fragment of substituted fused 1-oxo-3a,6-epoxyisoindoles is described. A continuous-flow hydrogenation device that incorporates in situ hydrogen generation by electrolysis of water was used. Changing the hydrogen source from water to deuterium oxide provides possibility to synthesize deuterated oxoepoxyisoindolones. Hydrogenation is stereoselective to give exclusively exo-cis deuterated derivatives.
[3+2] Cycloaddition of o-nitrophenyl azide to 3a,6-epoxyisoindoles
作者:Vladimir P. Zaytsev、Dmitriy F. Mertsalov、Maryana A. Nadirova、Pavel V. Dorovatovskii、Victor N. Khrustalev、Elena A. Sorokina、Fedor I. Zubkov、Aleksey V. Varlamov
DOI:10.1007/s10593-018-2194-1
日期:2017.11
[3+2] Cycloaddition of o-nitrophenyl azide to the multiple bond of oxabicyclo[2.2.1]heptene moiety in substituted 3a,6-epoxyisoindoles was performed. The 1,3-dipolar addition reaction proceeded stereoselectively, producing a pair of isomeric cis-4,8a-epoxy[1,2,3]triazolo[4,5-e]isoindoles. This approach demonstrated synthetic access to isomeric epoxy-1,2,3-benzotriazoles fused with a γ-butyrolactam
在取代的3a,6-环氧异吲哚中,将邻硝基苯基叠氮化物[3 + 2]环加成到氧杂双环[2.2.1]庚烯部分的多重键上。1,3-偶极加成反应立体选择性地进行,产生一对异构的顺式-4,8a-环氧[1,2,3]三唑并[4,5- e ]异吲哚。该方法证明了合成方法可合成与γ-丁内酰胺部分稠合的环氧-1,2,3-苯并三唑异构体。
Rapid Ring‐Opening Metathesis Polymerization of Monomers Obtained from Biomass‐Derived Furfuryl Amines and Maleic Anhydride
作者:Anna Blanpain、James H. Clark、Thomas J. Farmer、Yuanlong Guo、Ian D. V. Ingram、John E. Kendrick、Stefan B. Lawrenson、Michael North、George Rodgers、Adrian C. Whitwood
DOI:10.1002/cssc.201900748
日期:——
Well‐controlled and extremely rapid ring‐opening metathesis polymerization of unusual oxanorbornene lactam esters by Grubbs third‐generation catalyst is used to prepare a range of bio‐based homo‐ and copolymers. Bio‐derived oxanorbornene lactam monomers were prepared at room temperature from maleic anhydride and secondary furfuryl amines by using a 100 % atom economical, tandem Diels–Alder lactamization