Hydrostannation of activated alkynes mediated by Stryker’s reagent*

نویسندگان

  • Lai To Leung
  • Pauline Chiu
چکیده

The treatment of activated alkynes with catalytic amounts of Stryker’s reagent and tributylstannane resulted in hydrostannation. The reaction proceeds with high regioselectivity to produce α-stannated vinylstannanes exclusively.

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

Stereoselective total synthesis of (-)-borrelidin.

A convergent synthesis of ( )-borrelidin (1) is reported based on the retrosynthetic disconnections indicated in the picture. Highlights of the strategy include the construction of a strained enynone-containing macrolide and the installation of a cyano group in a regioselective manner by a novel molybdenum-catalyzed hydrostannation of the alkyne. B. G. Vong, S. H. Kim, S. Abraham, E. A. Theodor...

متن کامل

Zinc mediated activation of terminal alkynes: stereoselective synthesis of alkynyl glycosides.

Zinc mediated alkynylation reaction was studied for the preparation of C-glycosides from unactivated alkynes. Different glycosyl donors such as glycals and anomeric acetates were tested towards an alkynyl zinc reagent obtained from alkynes using zinc dust and ethyl bromoacetate as an additive. The method provides simple, mild and stereoselective access to alkynyl glycosides both from aromatic a...

متن کامل

Hypervalent iodine(III)-mediated cyclopropa(e)nation of alkenes/alkynes under mild conditions.

Hypervalent iodine(III)-mediated dioxygenation and diamination of alkenes have been previously developed. In this study, the potential application of hypervalent iodine(III) reagent was successfully extended to the dialkylation and cyclopropa(e)nation of unsaturated alkenes and alkynes. The reactions of alkenes with malononitrile and other active methylene compounds as the carbon nucleophiles g...

متن کامل

An efficient reagent for covalent introduction of alkynes into proteins.

A cheap and bench-stable reagent was synthesized for direct and covalent introduction of alkynes into tyrosine of target proteins, which can be further modified based on click reaction to achieve fluorescence labelling or PEGylation. This reagent should be a generally useful toolbox for chemical biology and biomaterials.

متن کامل

Titanium-mediated reductive cross-coupling reactions of imines with terminal alkynes: An efficient route for the synthesis of stereodefined allylic amines

Low-valency titanium species, generated in situ by using Ti(OiPr)4/2 c-C5H9MgCl reagent, react with imines to give a titanium-imine complex that can couple with terminal alkynes to provide azatitanacyclopentenes with excellent regioselectivity. Stereodefined allylic amines are obtained in good yields after hydrolysis or iodonolysis of the corresponding azatitanacyclopentenes. When ethynylcyclop...

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:

دوره   شماره 

صفحات  -

تاریخ انتشار 2006