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Hosomi-Sakurai Reaction

Lianyungang Klinechem Co.,Ltd | Updated: Dec 07, 2018

Hosomi-Sakurai Reaction

The Hosomi Sakurai Reaction involves the Lewis acid-promoted allylation of various electrophiles with allyltrimethysilane. Activation by Lewis acids is critical for an efficient allylation to take place.

Mechanism of the Hosomi-Sakurai Reaction

Note: Silicon stabilizes β carbocations (β effect)

Only catalytic amounts of Lewis acid are needed in some newer protocols. Note the use of allylsilyl chlorides instead of allyltrimethylsilane:

A. Fürstner, D. Voigtländer, Synthesis2000, 959-969.

Recent Literature

Silver-Catalyzed Asymmetric Sakurai-Hosomi Allylation of Ketones
M. Wadamoto, H. Yamamoto, J. Am. Chem. Soc.2005127, 14556-14557.

Synthesis of Homoallyl Ethers via Allylation of Acetals in Ionic Liquids Catalyzed by Trimethylsilyl Trifluoromethanesulfonate
H. M. Zerth, N. M. Leonard, R. S. Mohan, Org. Lett.20035, 55-57.

o-Benzenedisulfonimide as a Reusable Brønsted Acid Catalyst for Hosomi-Sakurai Reactions
M. Barbero, S. Bazzi, S. Cadamuro, S. Dughera, C. Piccinini, Synthesis2010, 315-319.

Efficient Brønsted Acid Catalyzed Hosomi-Sakurai Reaction of Acetals
D. Kampen, B. List, Synlett2006, 2589-2592.

Microwave-Assisted Allylation of Acetals with Allyltrimethylsilane in the Presence of CuBr
M. E. Jung, A. Maderna, J. Org. Chem.200469, 7755-7757.

METHOX: A New Pyridine N-Oxide Organocatalyst for the Asymmetric Allylation of Aldehydes with Allyltrichlorosilanes
A. V. Malkov, M. Bell, F. Castelluzzo, P. Kocovsky, Org. Lett.20057, 3219-3222.

A General Catalytic Allylation Using Allyltrimethoxysilane
S. Yamasaki, K. Fujii, R. Wada, M. Kanai, M. Shibasaki, J. Am. Chem. Soc.2002124, 6536-6537.

FeSO4·7H2O-Catalyzed Four-Component Synthesis of Protected Homoallylic Amines
Q.-Y. Song, B.-L. Yang, S.-K. Tian, J. Org. Chem.200772, 5407-5410.

A selective coupling of alkynylsilanes and allyltrimethylsilane is catalyzed by 5 mol% of indium tribromide under mild conditions to afford the corresponding α,β-acetylenic ketones and β,γ-unsaturated ketones in excellent yields.
J. S. Yadav, B. V. S. Reddy, M. Sridhar Reddy, G. Parimala, Synthesis, 2003, 2390-2394.

An enhanced Lewis acid system of InCl3 and Me3SiBr can be used to promote a wide range of direct coupling reactions between alcohols and silyl nucleophiles in non-halogenated solvents. Highly chemoselective allylations toward a hydroxyl moiety over ketone and acetoxy ones have been demonstrated.
T. Saito, Y. Nishimoto, M. Yasuda, A. Baba, J. Org. Chem.200671, 8516-8522.

Generation of Cations from Alkoxides: Allylation of Propargyl Alcohols
G. W. Kabalka, M.-L. Yao, S. Borella, J. Am. Chem. Soc.2006128, 11320-11321.

Efficient Addition of Allylsilanes to α,β-Enones Using Catalytic Indium and Trimethylsilyl Chloride
P. H. Lee, D. Seomoon, S. Kim, K. Nagaiah, S. V. Damle, K. Lee, Synthesis, 2003, 2023-2026.

Stereoselective Synthesis of 2,4,5-Trisubstituted Tetrahydropyrans Using an Intramolecular Allylation Strategy
P. J. Jervis, B. M. Kariuki, L. R. Cox, Org. Lett.20068, 4637-4640.

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