• 제목/요약/키워드: Allyltrimethylsilane

검색결과 4건 처리시간 0.016초

Mild and Efficient Tris(pentafluorophenyl)borane-catalyzed Sakurai Allylation of N-Benzyloxycarbonylamino p-Tolylsulfone with Allyltrimethylsilane

  • Thirupathi, Ponnaboina;Neupane, Lok Nath;Lee, Keun-Hyeung
    • Bulletin of the Korean Chemical Society
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    • 제33권4호
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    • pp.1275-1278
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    • 2012
  • Tris(pentafluorophenyl)borane, $B(C_6F_5)_3$, was found to be an efficient catalyst for synthesis of N-Cbzhomoallylic amines using Sakurai allylation of N-benzyloxycarbonyl-amino p-tolylsulfones with allyltrimethylsilane.

Magnesium Bistrifluoromethanesulfonimide Catalyzed Three-component Synthesis of Protected Homoallylic Amines

  • Wang, Hongshe;Zeng, June
    • Bulletin of the Korean Chemical Society
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    • 제32권7호
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    • pp.2203-2206
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    • 2011
  • A mild and efficient procedure has been developed for the one-pot, three-component reaction of aldehydes, benzyl carbamate and allyltrimethylsilane in the presence of 3 mol % of magnesium bistrifluoromethanesulfonimide at room temperature to afford the corresponding protected homoallylic amines in high yields.

MOVCD에 있어서 구리(l)전구체들의 열적 안정성이 증착에 미치는 영향 (The Effect of Thermal Stability of Cu(I) Precursors on the Deposition in the Metal Organic Chemical Vapor Deposition)

  • 박만영;이시우
    • 한국재료학회지
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    • 제8권4호
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    • pp.345-353
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    • 1998
  • 음이온 리간드로 hfac이 배위된 세 가지 종류의 구리(l) 전구체들의 열적 안정성, 기상분해 특성, 증착 특성 등을 연구하였다. $^{1}$H-NMR결과로부터 (hfac) Cu(VTMS) (hfac=hexafluoroacetylacetonate, VTMS=vinyltrimethylsilane)와 (hfac)Cu(VTMS) (VTMOS=vinyltrimethoxysilane)는 열적으로 안정한 화합물이라는 것을 확인할 수 있었으며, (hfac)Cu(ATMS)(STMS=allyltrimethylsilane)는 다른 전구체에 비해 열적으로 불안정한 화합물이라는 것을 확인할 수 있었다. In-situ FT-IR을 이용하여 기상 분해 특성을 연구한 결과 (hfac)Cu(VTMS)의 경우 $150^{\circ}C$부근에서 $Cu(hfac)_{2}$, $240^{\circ}C$부근에서 free한 상태의 hfac의 생성을 확인할 수 있었으며, 이러한 특성이 박막의 증착 속도와 물성에 미치는 영향을 확인하였다. 그리고 이들 전구체들의 증착 특성을 연구하였으며 (hfac)Cu(ATMS)의 경우 아르곤 운반 기체하에서 기판 온도가 $60^{\circ}C$일 때 구리 박막이 증착이 시작되는 것을 관찰할 수 있었는데, 이러한 낮은 증착 온도는 상대적으로 약한 구리와 ATMS의 결합력에 의한 것으로 생각된다.

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2-히드록시에틸 메타크릴레이트와 기능성 사이레인 단량체와의 공중합에 관한 연구 (Copolymerization of 2-Hydroxyethyl Methacrylate with Functional Silane Monomers)

  • 성용길;이창규;정일남
    • 대한의용생체공학회:의공학회지
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    • 제8권1호
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    • pp.29-40
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    • 1987
  • 2-Hydroxyethyl methacrylate(HEMA) was copolymerized with allyltrimethylsilane- (ATMS) and allylt.imethoxysilane(ATMOS) at 70。C in N, N'dimethylformamide- (DMV) using $\alpha$ , $\alpha$'-azobisisobutyronitrile(AIBN). The compositions of unreacted monomers were determined by gas chromatographic analysis. The monomer reactivity ratios were determined by Fireman-Ross, Helen-Tiidus and intersection methods. The average values are as follows : $$r_1(HEMA) : 6.62 $\pm$ 0.07, r_2(ATMS) : 0.07 $\pm$ 0.01 for HEMA-ATMS system.$$ $$r_l(HEMA) : 4.09 $\pm$ 0.14, r_2(ATMOS) : 0.06 $\pm$ 0.01 for HEMA-ATMOS toys tem.$$ The lower rl(HEMA) In the HEMA-ATMOS system as compared to HEMA ATMS system may be contributed to higher relative reactivity of ATMOS toward the poly(HEMA) radical. The compositions of synthesized copolymers were determined from silicon con tents estimated gravimetrically. The thermal stabilities of the copolymers were investigated by thermogravimetry(TG). The enthalpic changes associated with the endothermic transition were evaluated by differential scanning calorimetry(DSC). The swelling properties of the copolymers in water were also investigated.

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