139284-72-3Relevant academic research and scientific papers
Homogeneous Catalysis. Use of the Catalyst for the Sakurai Reaction of Allylic Silanes with Orthoesters, Acetals, Ketals and Carbonyl Compounds.
Hollis, T. Keith,Robinson, N. P.,Whelan, John,Bosnich, B.
, p. 4309 - 4312 (1993)
The effectiveness of the catalyst for the Sakurai reaction has been explored for a variety of allylic silanes reacting with orthoesters, acetals, ketals, aldehydes and ketones. Key Words: Sakurai reaction, titanium based catalyst.
Chlorotrimethylsilane-Acetonitrile System as a New Promoter for Carbonyl Allylation by Diallyldibutyltin
Yasuda, Makoto,Fujibayashi, Tatsuya,Shibata, Ikuya,Baba, Akio,Matsuda, Haruo,Sonoda, Noboru
, p. 167 - 168 (1995)
Chlorotrimethylsilane combined with acetonitrile has characteristically promoted allylation of carbonyl compounds by diallyldibutyltin to produce a variety of homoallyl silyl ether in good yields, while the addition of HMPA or LiCl disturbed the allylatio
Chemoselective Nucleophilic Functionalizations of Aromatic Aldehydes and Acetals via Pyridinium Salt Intermediates
Kawajiri, Takahiro,Kato, Maho,Nakata, Hiroki,Goto, Ryota,Aibara, Shin-Yo,Ohta, Reiya,Fujioka, Hiromichi,Sajiki, Hironao,Sawama, Yoshinari
, p. 3853 - 3870 (2019/03/07)
The development of a novel chemoselective functionalization can diversify the strategy for synthesizing the target molecules. The perfect chemoselectivity between aromatic and aliphatic aldehydes is difficult to achieve by the previous methods. The aromatic aldehyde-selective nucleophilic addition in the presence of aliphatic aldehydes was newly accomplished. Namely, the aromatic aldehyde-selective nucleophilic addition using arenes and allyl silanes proceeded in the presence of trialkylsilyl triflate and 2,2′-bipyridyl, while the aliphatic aldehydes completely remained unchanged. The reactive pyridinium-type salt intermediate derived from an aromatic aldehyde chemoselectively underwent the nucleophilic substitution. Moreover, the aromatic acetals as the protected aldehydes could be directly transformed into similar pyridinium salt intermediates, which reacted with various nucleophiles coexisting with the aliphatic aldehydes.
Cationic Cobalt Porphyrin-Catalyzed Allylation of Aldehydes with Allyltrimethylsilanes
Tomifuji, Rei,Masuda, Shota,Kurahashi, Takuya,Matsubara, Seijiro
supporting information, p. 3834 - 3837 (2019/05/24)
Cationic cobalt porphyrin-catalyzed allylation of aldehydes with allyltrimethylsilanes is developed. The formation of the aldehyde-cobalt porphyrin complex, the key intermediate for the addition of allylsilanes, is confirmed by theoretical studies and syn
Chiral nickel complex
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Paragraph 0009, (2018/05/15)
The invention relates to a chiral nickel complex (I) with a chemical formula as shown in the specification. A synthesis method of the complex (I) comprises the following steps: weighing 0.03mol of (R)-valinol and putting into a 100ml round-bottom flask, adding 40ml of absolute methanol, and stirring to dissolve; then weighing 0.01mol of NiCl2.6H2O and adding to the solution, controlling the temperature at about 75 DEG C, and performing heating reflux for 36 hours; filtering a reaction solution while the solution is still hot, spinning the solution to be half by using a rotary evaporator, adding about 5ml of n-hexane to the redundant solution, and standing for volatilization, wherein blue crystals are separated out after 2 weeks; filtering out the crystals, washing the crystals for 3 timeswith petroleum ether, and performing vacuum drying for 30 minutes to obtain the target product. The complex shows certain catalysis property in allyl alkylation reaction of benzaldehyde, Baylis-Hillman reaction and nitrile silicification reaction, with conversion rates up to 76%, 78% and 66%, respectively.
Chiral zinc complex
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Paragraph 0010, (2017/03/28)
The invention relates to chiral zinc complex. A synthesizing method of the complex includes: allowing 2.0954g of 2-cyanopyridine and 3.9920g of L-phenylalaninol to have reflux reaction for 60 hours in a chlorobenzene solvent under an anhydrous and oxygen-
Synthetic method and application of chiral compound
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Paragraph 0010, (2017/10/25)
The invention relates to a synthetic method of a chiral compound. The synthetic method comprises the following steps: taking 0.2720g of zinc chloride as a catalyst under water-free and oxygen-free conditions, weighing 2.0449g of acetylurea and 8.1397g of
A hand natural platinum complex crystal preparation and synthetic method
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Paragraph 0207-0209, (2017/12/28)
The chemical formula of a chiral platinum complex crystal is as shown in the specification. A synthesis method for the chiral platinum complex crystal (I) comprises the steps: by utilizing 1.1101 g of platinum tetrachloride, 1.3905 g of L-phenylglycinol a
Chiral nickel complex
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Paragraph 0009, (2017/08/28)
The invention provides a chiral nickel complex (I) with the chemical formula shown in the description. A synthesis method of the chiral nickel complex (I) comprises synthesis and separation, and is characterized in that the synthesis comprises the followi
Synthesis method and use of 3-amino-4-hydroxy benzoic acid monohydrate crystal
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Paragraph 0009, (2018/01/04)
The chemical formula of a 3-amino-4-hydroxy benzoic acid monohydrate crystal is formula (I) shown in the description. A synthesis method of the compound crystal (I) comprises the following steps: weighing 1.0003 g of 3-amino-4-hydroxy benzoic acid, placin
