Synthesis of cyclopropanes via organoiron methodology: preparation of rac-dysibetaine CPa.

نویسندگان

  • Tasneem A Siddiquee
  • Julie M Lukesh
  • Sergey Lindeman
  • William A Donaldson
چکیده

The cyclopropane containing betaine, rac-dysibetaine CPa, was prepared from (1-methoxycarbonylpentadienyl)-Fe(CO)2PPh3+ by nucleophilic addition of nitromethane anion followed by oxidatively induced reductive elimination.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Highly Diastereo- and Enantioselective Synthesis of Trifluoromethyl-Substituted Cyclopropanes via Myoglobin-Catalyzed Transfer of Trifluoromethylcarbene.

We report an efficient strategy for the asymmetric synthesis of trifluoromethyl-substituted cyclopropanes by means of myoglobin-catalyzed olefin cyclopropanation reactions in the presence of 2-diazo-1,1,1-trifluoroethane (CF3CHN2) as the carbene donor. These transformations were realized using a two-compartment setup in which ex situ generated gaseous CF3CHN2 is processed by engineered myoglobi...

متن کامل

Total synthesis of (+/-)-dysibetaine.

The marine natural product dysibetaine was synthesized in racemic form from a levulinic acid derivative using a convertible isocyanide and an ammonium acetate in the Ugi 4-center-3-component condensation reaction.

متن کامل

2,5-Dialkyl cyclohexenones by Fe(CO)5-mediated carbonylation of alkenyl cyclopropanes: functional group compatibility.

The preparation of alkenyl cyclopropanes 1 with a variety of common organic functionalities is reported. These substrates were subjected to the Fe(CO)(5)-mediated carbonylation process under a CO atmosphere, leading to the formation of 2,5-disubstituted cyclohexenones 2, important intermediates for target-directed synthesis.

متن کامل

A mild protocol for the preparation of 2-amino-dihydropyrano[3,2-b] pyran-3-carbonitriles via cobalt nanoparticles-catalyzed multi-component reaction in water

An improved rapid one-pot and green synthesis of substituted pyranopyranes by condensing Kojic acid, malononitrile, and different aldehydes and using a catalytic amount of cobalt nanoparticles as green and reusable catalyst is reported for the first time. The reaction proceeds in aqueous media at ambient temperature. Furthermore, the structural and morphological study of the cobalt nanoparticle...

متن کامل

Diversity-oriented synthesis of acyclic nucleosides via ring-opening of vinyl cyclopropanes with purines.

The diversity-oriented synthesis of acyclic nucleosides has been achieved via ring-opening of vinyl cyclopropanes with purines. With Pd2(dba)3·CHCl3 as a catalyst, the 1,5-ring-opening reaction proceeded well and afforded N9 adducts as the major form, in which the C=C bonds in the side chain were exclusively E-form. In the presence of AlCl3, the 1,3-ring-opening reaction occurred smoothly, givi...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • The Journal of organic chemistry

دوره 72 25  شماره 

صفحات  -

تاریخ انتشار 2007