- Convenient preparation of primary amides via activation of carboxylic acids with ethyl chloroformate and triethylamine under mild conditions
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Primary amides were easily prepared in 22-99% yields from the corresponding carboxylic acids 1 or 5 with NH4Cl via activation with ClCO 2Et and Et3N. The enantiomers of the corresponding primary amides of Cbz-, Boc-, or Fmoc-α-amino acids can be separated by using a chiral column.
- Noguchi, Takuya,Sekine, Masahiro,Yokoo, Yuki,Jung, Seunghee,Imai, Nobuyuki
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p. 580 - 582
(2013/07/05)
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- Synthesis of certain unsubstituted, 9-exo-(dialkylaminomethyl)-, and 9- endo-(aralkyl)-tricyclo [5.2.1.02,6 decane-8-ketoxime esters and ethers with local anesthetic and analgesic activities
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The synthesis of series of unsubstituted, 9-exo-(dialkylaminomethyl)-, and 9-endo-(aralkyl)tricyclo [5.2.1.0(2,6)] decane-8-ketoximes esters and ethers 3a-j, 4a-d, 7a-j and 13a-d from the oxime synthons 2, 6a-e, 12a and 12b, respectively, is described. Al
- Aboul-Enein M, Nabil,El-Azzouny, Aida,Abdallah, Nevine A.,Maklad, Yousreya A.,Saleh, Ola A.,Ebeid
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p. 197 - 208
(2007/10/03)
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- Selective reduction of mixed anhydrides of carboxylic acids to alcohols using borohydride exchange resin (BER)-nickel acetate
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Mixed anhydrides of carboxylic acids have been selectively reduced to alcohols with borohydride exchange resin-nickel acetate under mild conditions and in good yields.
- Bandgar,Modhave,Wadgaonkar,Sande
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p. 1993 - 1994
(2007/10/03)
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- Nickel boride reduction of symmetric and mixed anhydrides of carboxylic acids
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Symmetric and mixed anhydrides of carboxylic acids have been reduced in good yields with nickel boride generated in situ in diglyme.
- Khan, Rahat H.,Rastogi, Ramesh C.
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p. 898 - 900
(2007/10/02)
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- Studies on Quinolizine Derivatives. XXII. Syntheses and Properties of 2-Phenylazacylazine Derivatives
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By the reaction of 6-methyl-4-imino-4H-quinolizine derivatives (5, 8) with the mixed anhydrides (6a-h), 2-phenyl-1-azacylazines (7a-p, 9a-g) were obtained. 2-Phenyl-1,3,6-triazacyclazine derivatives (15a-h, 17a-h, 18a-g) were prepared by the
- Matsuda, Yoshiro,Gotou, Hiromi,Oniyama, Yukio,Katou, Keisuke,Matsumoto, Hiroshi
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p. 4307 - 4315
(2007/10/02)
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- Reduction of Symmetric and Mixed Anhydrides of Carboxylic Acids by Sodium Borohydride with Dropwise Addition of Methanol
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Symmetric and mixed anhydrides of carboxylic acids are reduced in high yields with sodium borohydride in tetrahydrofuran with dropwise addition of methanol.
- Soai, Kenso,Yokoyama, Shuji,Mochida, Katsuko
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p. 647 - 648
(2007/10/02)
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