Chiral allenes via Mukaiyama-Aldol

Benjamin List and co-workers at Max-Planck-Institut für Kohlenforschung reported in ACIE on a Mukaiyama-Aldol approach to access axially chiral allenes.
ACIE paper

Propargylic benzoate to allene

Erick Carreira and colleague have reported in Organic Letters on a rhodium catalyzed synthesis of chiral allenes from propargylic benzoates.

 

OL paper

Chiral phosphoric acid for allenamides with ketones

Dean Toste and colleague have reported in Chemical Science on the use of a chiral phosphoric acid catalyst to react allenamides with ketones. I guess the papers published in Chemical Science in 2015 and 2016 are all open access.

 

Chemical Science paper

Back to Back Method Papers: Allenamide + Aldehyde = alpha-Alkylation

Fernando Lopez and co-workers at Universidad de Santiago de Compostela have reported in Chemical Communications on a gold/organocatalyst-cocatalyzed alpha alkylation of aldehydes. Interestingly Jose Gonzalez and co-workers at Universidad de Oviedo also reported in Chem Comm on a gold/organocatalyst reaction.

 

Chem Comm paper

 

Chem Comm paper 2

Clavosolide A synthesis

Bernhard Breit and colleague at Albert-Ludwigs-Universität Freiburg have reported in ACIE on a synthesis of clavosolide, taking advantage of the C2 symmetry.

ACIE paper

Alkynyl trifluoroborate + aldehyde = allene

Regan Thomson and co-workers from Northwestern report in ACS Combinatorial Science on a traceless Petasis reaction.

ACS Combinatorial Science paper

Kumausallene synthesis

Chepuri Ramana and colleague have reported in Tetrahedron on a formal synthesis of kumausallene.

Tetrahedron paper

On the utility of allenoates

Hongchao Guo and co-workers from China Agricultural University have reported in Chemical Communications on a [4+1] cyclization of allenoates with anilines to form substituted indolines.

Chem Comm paper

Alkaloid 205B synthesis

Jin Kun Cha and colleague at Wayne State University have reported in JACS on a synthesis of alkaloid 205B.

JACS paper

Silacarboxylation of allenes

Yasushi Tsuji and co-workers have reported in JACS on a copper catalyzed silacarboxylation of allenes using carbon dioxide and a silylborane.

JACS paper