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T-Butyl lithioacetate

Michael intramolecular alkylation The reaction of t-butyl lithioacetate (1) with ethyl 6-iodo-2-hexenoate 2 in the presence of potassium t-butoxide in THF at - 78° results in a single trans-l, 2-disubstituted cyclopentane (3). Reaction of 2 with t-butyl lithiopropionate (4) under the same conditions results mainly in syn-5, but when HMPT is also present anti-5 is mainly formed. Similar stereoselectivity is observed in reaction of 1 and 4 with ethyl 6-iodo-2-heptenoate in formation of... [Pg.252]

Stirring the dithioacetals (30.8) with t-butyl lithioacetate and LDA at -78°C and then with t-butyl acetate gives a high yield of the pyran-2-one. [Pg.191]

Related Reagents. t-Butyl Q -Lithiobis(trimethylsilylacetate Ethyl Lithioacetate Ethyl Lithio(trimethylsilyl)acetate Ethyl Trimethylsilylacetate Triethyl Phosphonoacetate Trimethylsilyl-... [Pg.147]

Related Reagents. t-Butyl a-Lithiobis(lrimethylsilyl)acetate t-Butyl Trimethylsilylacetate Dilithioacetate Ethyl Bromozin-cacetate Ethyl Lithioacetate Ethyl Lithio(trimethylsilyl)acetate Ketene Bis(trimethylsilyl) Acetal Ketene t-Butyldimethylsilyl Methyl Acetal l-Methoxy-2-trimethylsilyl-l-(trimethylsilyloxy)-ethylene Methyl (Methyldiphenylsilyl)acetate Trimethylsilyl-acetic Acid. [Pg.299]

Related Reagents. t-Butyl a-Lithioisohutyrate Dilithio-acetate Ethyl Lithioacetate Ketene Bis(trunethylsilyl) Acetal Ketene f-Butyldimethylsilyl Methyl Acetal l-Methoxy-l-(tri-methylsilyloxy)propene l-Methoxy-2-trunethylsilyl-l-(tri-methylsilyloxy)ethylene Tris(trimethylsilyloxy)ethylene. [Pg.379]

See other pages where T-Butyl lithioacetate is mentioned: [Pg.161]    [Pg.3320]    [Pg.733]    [Pg.104]    [Pg.161]    [Pg.3320]    [Pg.733]    [Pg.104]    [Pg.238]   
See also in sourсe #XX -- [ Pg.84 , Pg.636 ]



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2-Lithioacetals

T-butyl

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