213340-08-0Relevant academic research and scientific papers
Stille-heck coupling sequences applied in a versatile new access to steroid skeletons
Suennemann, Hans Wolf,Hofmeister, Anja,Magull, Joerg,De Meijere, Armin
, p. 3739 - 3756 (2008/02/08)
A variety of enantiomerically pure steroidal compounds was synthesized utilizing a sequence of Stille and Heck cross-coupling reactions and subsequent thermal 6π-electrocyclizations. Highly chemoselective Stille couplings on the triflate moiety of several
Synthesis and use of new substituted 1,3,5-hexatrienes in studying thermally induced 6π-electrocyclizations
Suennemann, Hans Wolf,Banwell, Martin G.,De Meijere, Armin
, p. 3879 - 3893 (2008/02/13)
An acyclic, two heterocyclic, and two bicyclic alkenylstannanes, 3, 4a, 4b, 8 and 11, respectively, were synthesized in yields ranging from 43 to 97 %, and each was subjected to a sequence of Stille and Heck couplings with 2-bromocyclohexenyl triflate (13
A one-pot sequence of Stille and Heck couplings: Synthesis of various 1,3,5-hexatrienes and their subsequent 6π-electrocyclizations
Von Zezschwitz, Paultheo,Petry, Frauke,De Meijere, Armin
, p. 4035 - 4046 (2007/10/03)
Palladium-catalyzed crosscoupling reactions of 2-bromocyclohex1-enyl triflates 7 and 11 with a variety of alkenylstannanes occurred chemoselectively at the site of the triflate leaving group to give bromobutadienes which readily underwent Heck reactions w
The twofold Heck reaction on 1,2-dihalocycloalkenes and subsequent 6π-electrocyclization of the resulting (E,Z,E)-1,3,5-hexatrienes: A new formal {2+2+2}-assembly of six-membered rings
Voigt, Katharina,Von Zezschwitz, Paultheo,Rosauer, Keith,Lansky, Annegret,Adams, Amy,Reiser, Oliver,De Meijere, Armin
, p. 1521 - 1534 (2007/10/03)
1,6-Disubstituted (E,Z,E)-1,3,5-hexatrienes (4 and 5) were prepared by vicinal twofold Heck coupling reactions from 1,2-dibromocyclopentene (1), 1,2-dibromocyclohexene (2), 1,2-diiodocyclopentene (8), 1,2-diiodocyclohexene (9), 1-bromo-2-trifluoromethanes
