Synthesis 2021; 53(17): 3121-3125
DOI: 10.1055/a-1523-6826
special topic
Bond Activation – in Honor of Prof. Shinji Murai

Ruthenium-Catalyzed Asymmetric Dehydrative Allylic Cyclization of Five-Membered Chalcogen Heteroaromatics

Shinji Tanaka
a   Research Center for Materials Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan
,
Shoutaro Iwase
b   Graduate School of Pharmaceutical Sciences, Nagoya University, Chikusa, Nagoya 464-8601, Japan
,
Sena Kanda
c   Department of Chemistry, Nagoya University, Chikusa, Nagoya 464-8601, Japan
,
Marie Kato
b   Graduate School of Pharmaceutical Sciences, Nagoya University, Chikusa, Nagoya 464-8601, Japan
,
Yutaro Kiriyama
c   Department of Chemistry, Nagoya University, Chikusa, Nagoya 464-8601, Japan
,
Masato Kitamura
b   Graduate School of Pharmaceutical Sciences, Nagoya University, Chikusa, Nagoya 464-8601, Japan
› Author Affiliations
This work was supported by JSPS KAKENHI Grant Number JP16H02274, the Platform Project for Supporting Drug Discovery and Life Science Research funded by the Japan Agency for Medical Research and Development (AMED; Grant Number JP18am0101099), and the Advanced Catalytic Transformation Program for Carbon Utilization (ACT-C; Grant Number JPMJCR12YC) from the Japan Science and Technology Agency (JST).


Abstract

The asymmetric dehydrative intramolecular allylation reactions of furan and thiophene were performed using a cationic cyclopentadienyl-ruthenium (CpRu) complex of a chiral pyridine carboxylic acid, namely Cl-Naph-PyCOOH. Both furan and thiophene tethered with an allylic alcohol gave the corresponding bicyclic compounds in high yields and enantioselectivities using 0.1–5 mol% of the catalyst. The reaction was found to proceed via a similar enantioface selection mechanism to that previously reported by our group, which involved halogen and hydrogen bond formation, in addition to the generation of an intermediate σ-allyl complex.

Supporting Information



Publication History

Received: 15 March 2021

Accepted after revision: 07 June 2021

Accepted Manuscript online:
07 June 2021

Article published online:
20 July 2021

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