永井君の論文がSynlett誌に掲載決定!

(90) New synthetic methodology toward azaspiro-γ-lactones via oxidative C-H spirocyclization reaction
Tetsuya Sengoku, Yuichiro Nagai, Toshiyasu Inuzuka and Hidemi Yoda
Synlett, 2019, 30, 199-202. (DOI: 10.1055/s-0037-1611941)

The key C–H spirolactonization was accomplished by employing iodobenzene diacetate and potassium bromide to afford a variety of azaspiro-γ-lactones in high yields. 

 

Journal Information: Impact factor 2.369 (Q2, JCR 2017)

林君の論文がEJOC誌に掲載決定!

(89) Electrophilic amide allylation of 3-heterosubstituted oxindoles: a new route to spirocyclic 2-oxindole containing α-methylene-γ-butyrolactam structure
Tetsuya Sengoku, Daichi Hayashi, Masaki Takahashi and Hidemi Yoda
European Journal of Organic Chemistry, 2018, 1813-1820. (DOI: 10.1002/ejoc.201800084)

The key “electrophilic amide allylation” was accomplished by using acetoxy methacrylamides and tetrakis(triphenylphosphine)palladium as a catalyst, affording a variety of the amide allylated products in excellent yields.

 

Journal Information: Impact factor 2.834 (Q2, JCR 2016)

浅羽君、Luaさんの論文がJOC誌に掲載決定!

(88) Controllable monobromination of perylene ring system: synthesis of bay-functionalized perylene dyes
Masaki Takahashi, Kyohei Asaba, Trinh Thi Lua, Toshiyasu Inuzuka, Naohiro Uemura, Masami Sakamoto, Tetsuya Sengoku and Hidemi Yoda
The Journal of Organic Chemistry, 2018, 83, 624-631. (DOI: 10.1021/acs.joc.7b02540)

Practical synthesis of bay-monofunctionalized perylene dyes has been developed based on controllable NBS bromination of tetrabenzyl perylene-3,4,9,10-tetracarboxylate. The ability to perform the convenient and high-yielding synthesis highlights the potential utility of our multifunctional approach to access diverse range of new perylene systems.

 

Journal Information: Impact factor 4.849 (Q1, JCR 2016)

神谷君、川上さんの論文がEJOC誌に掲載決定!

(87) Use of β-Amido Allylboronate as a Nucleophilic Reagent in Catalytic Amide Allylation of N-Carbonyl Imides
Tetsuya Sengoku, Yuta Kamiya, Ai Kawakami, Masaki Takahashi and Hidemi Yoda
European Journal of Organic Chemistry, 2017, 6096-6098. (DOI: 10.1002/ejoc.201701112)

β-Amido allylboronates showed sufficient nucleophilicity toward imides in the presence of catalytic zinc bromide and basic additives, affording excellent yields of azaspiro-γ-lactones through a ring opening-reclosure process on a gram scale.

 

Journal Information: Impact factor 2.834 (Q2, JCR 2016)