Microwave-Sensitive Foamable Poly(ionic liquids) Bearing tert -Butyl Ester Groups: Influence of Counterions on the Ester Pyrolysis

2008 ◽  
Vol 30 (2) ◽  
pp. 94-98 ◽  
Author(s):  
Sadik Amajjahe ◽  
Helmut Ritter
Keyword(s):  
Ionic Liquids ◽  
Butyl Ester ◽  
Tert Butyl ◽  
Ester Pyrolysis

Synthesis of Optically Active Hydroxyalkyl Cycloheptatrienes: A Key Step in the Total Synthesis of 6,11-Methylene-LXB4

Synlett ◽  
2020 ◽  
Vol 32 (01) ◽  
pp. 45-50
Author(s):  
Udo Nubbemeyer ◽  
Analuisa Nava ◽  
Lukas Trippe ◽  
Andrea Frank ◽  
Lars Andernach ◽  
...  
Keyword(s):  
Carboxylic Acid ◽  
Total Synthesis ◽  
Structure Elucidation ◽  
Butyl Ester ◽  
Optically Active ◽  
Chiral Hplc ◽  
Reaction Conditions ◽  
Acid Product ◽  
Tert Butyl ◽  
Nabh4 Reduction

AbstractStarting from methyl cycloheptatrienyl-1-carboxylate, 6-acylation was successfully achieved employing glutaryl chloride in the presence of AlCl3 under controlled reaction conditions to furnish keto carboxylic acid product. After protection of this keto carboxylic acid as tert-butyl ester, reagent-controlled enantioselective reductions delivered configuration-defined methyl-6-hydroxylalkyl cycloheptatriene-1-carboxylates with up to 80% ee. Whereas simple NaBH4 reduction of the keto carboxylic acid and subsequent lactonization afforded a methyl-6-tetrahydropyranonyl cycloheptatriene-1-carboxylate. Resolution using chiral HPLC delivered the product enantiomers with up to >99% ee Finally, ECD analyses enabled structure elucidation. The products are used as key intermediates in enantioselective 6,11-methylene-lipoxin B4 syntheses.

Facile synthesis of tert-butyl ester of N-protected amino acids with tert-butyl bromide

1993 ◽  
Vol 34 (46) ◽  
pp. 7409-7412 ◽  
Author(s):  
Pierre Chevallet ◽  
Patrick Garrouste ◽  
Barbara Malawska ◽  
Jean Martinez
Keyword(s):  
Amino Acids ◽  
Butyl Ester ◽  
Facile Synthesis ◽  
Butyl Bromide ◽  
Tert Butyl

scholarly journals Crystal structure of 2-(4-allyl-4-methyl-2-oxo-1,4-dihydro-2H-benzo[d]- [1,3]oxazin-6-yl)-5-cyano-pyrrole-1-carboxylic acid tert-butyl ester, C22H23N3O4

2014 ◽  
Vol 229 (2) ◽  
pp. 127-128 ◽  
Author(s):  
Chuanhong Zhang ◽  
Jianguo Lin ◽  
Gaochao Lv ◽  
Yang Cao ◽  
Shineng Luo
Keyword(s):  
Crystal Structure ◽  
Carboxylic Acid ◽  
Butyl Ester ◽  
Tert Butyl

Abstract C22H23N3O4, triclinic, P1¯ (no. 2), a = 6.992(3) Å, b = 8.159(4) Å, c = 18.778(8) Å, α = 92.118(7)°, β = 93.463(7)°, γ = 101.623(7)°, V = 1045.9 Å3, Z = 2, Rgt(F) = 0.0576, wRref(F2) = 0.1778, T = 296 K.

ChemInform Abstract: tert-Butyl Ester or Benzylamide of the Dipeptide Pro-Gly as Organocatalysts for the Asymmetric Aldol Reaction.

ChemInform ◽  
2015 ◽  
Vol 46 (24) ◽  
pp. no-no
Author(s):  
Ierasia Triandafillidi ◽  
Aikaterini Bisticha ◽  
Errika Voutyritsa ◽  
Gerasimia Galiatsatou ◽  
Christoforos G. Kokotos
Keyword(s):  
Aldol Reaction ◽  
Butyl Ester ◽  
Asymmetric Aldol ◽  
Tert Butyl ◽  
Asymmetric Aldol Reaction

Effect of ionic liquids on the thermal decomposition process of tert-butyl peroxybenzoate (TBPB) by DSC

2019 ◽  
Vol 671 ◽  
pp. 127-133 ◽  
Author(s):  
Jun-Cheng Jiang ◽  
Li Li ◽  
Jia-Jia Jiang ◽  
Yan Wang ◽  
Siu-Ming Lo ◽  
...  
Keyword(s):  
Thermal Decomposition ◽  
Ionic Liquids ◽  
Decomposition Process ◽  
Thermal Decomposition Process ◽  
Tert Butyl

ChemInform Abstract: Facile Synthesis of L-Dopa tert-Butyl Ester by Catalytic Enantioselective Phase-Transfer Alkylation.

ChemInform ◽  
2001 ◽  
Vol 32 (3) ◽  
pp. no-no
Author(s):  
Takashi Ooi ◽  
Minoru Kameda ◽  
Hidenori Tannai ◽  
Keiji Maruoka
Keyword(s):  
Phase Transfer ◽  
Butyl Ester ◽  
Facile Synthesis ◽  
Tert Butyl
Sign in / Sign up

Export Citation Format

Share Document