108945-27-3Relevant academic research and scientific papers
Organocatalytic Asymmetric Allylic Alkylations of Sulfoximines
Li, Zhen,Frings, Marcus,Yu, Hao,Raabe, Gerhard,Bolm, Carsten
, p. 7367 - 7370 (2018)
An enantio- and regioselective allylic alkylation of sulfoximines with Morita-Baylis-Hillman carbonates was developed. The asymmetric reaction is directed by a quinidine-derived organocatalyst providing a range of optically active α-methylene β-sulfoximidoyl esters in high yields (up to 93%) with good to excellent enantiomeric excesses (up to 95%) under mild reaction conditions.
Rhodium-Catalyzed [2+2+2] Cycloadditions of Diynes with Morita-Baylis-Hillman Adducts: A Stereoselective Entry to Densely Functionalized Cyclohexadiene Scaffolds
Fernández, Martí,Parera, Magda,Parella, Teodor,Lledó, Agustí,Le Bras, Jean,Muzart, Jacques,Pla-Quintana, Anna,Roglans, Anna
, p. 1848 - 1853 (2016)
A rhodium-catalyzed asymmetric synthesis of 5,5-disubstituted cyclohexa-1,3-dienes has been achieved by [2+2+2] cycloaddition reactions between diynes and Morita-Baylis-Hillman (M-B-H) adducts as unsaturated substrates. Products containing two adjacent ch
Synthesis of enantiomerically enriched Baylis-Hillman alcohols from their acetates: Combination of kinetic resolution during the salt formation with (DHQD)2PHAL and following asymmetric induction during hydrolysis with NaHCO3 as a water surrogate
Kim, Jae Nyoung,Lee, Hong Jung,Gong, Ji Hyeon
, p. 9141 - 9146 (2002)
Enantiomerically enriched Baylis-Hillman alcohols 2a-d (S) were prepared in 25-42% yields with optical purities of 54-92% ee by using the combined concept of kinetic resolution during the salt formation of racemic Baylis-Hillman acetates 1a-d with (DHQD)2PHAL and the asymmetric induction during the SN2′ type reaction with sodium bicarbonate as a water surrogate.
Asymmetric synthesis of multifunctional aryl allyl ethers by nucleophilic catalysis
Zhao, Shuai,Jin, Lei,Chen, Zhi-Li,Rui, Xue,He, Jia-Yi,Xia, Ran,Chen, Ke,Chen, Xiang-Xiang,Yin, Zi-Jian,Chen, Xin
, p. 11585 - 11588 (2019)
Asymmetric allylic substitution of Morita-Baylis-Hillman (MBH) carbonates with less-nucleophilic phenols mediated by nucleophilic amine catalysis was successfully developed. A variety of substituted aryl allyl ethers were afforded with moderate to high yields with excellent enantioselectivities. The chiral MBH alcohol could be easily accessed from the corresponding aryl allyl ether.
A new dual catalytic system for asymmetric morita-baylis-hillman reaction
Shah, Jabbar,Yacob, Zekarias,Bunge, Alexander,Liebscher, Jürgen
, p. 2079 - 2082 (2010)
High yields and enantioselectivities up to 88% were achieved in asymmetric Morita-Baylis-Hillman reactions using a combination of chiral amino acid derived guanidines and triphenylphosphane as a novel dual catalytic system.
First application of chiral ionic liquids in asymmetric Baylis-Hillman reaction
Pégot, Bruce,Vo-Thanh, Giang,Gori, Didier,Loupy, André
, p. 6425 - 6428 (2004)
The first example of the use of chiral ionic liquids as reaction media in the asymmetric Baylis-Hillman reaction was described using N-alkyl-N- methylephedrinium salts. Good yields and significant enantiomeric excesses were obtained. The first example of
A chiral squaramide-catalyzed asymmetric dearomative tandem annulation reaction through a kinetic resolution of MBH alcohols: Highly enantioselective synthesis of three-dimensional heterocyclic compounds
Zhou, Leijie,Zeng, Yuan,Gao, Xing,Wang, Qijun,Wang, Chang,Wang, Bo,Wang, Wei,Wu, Yongjun,Zheng, Bing,Guo, Hongchao
, p. 10464 - 10467 (2019)
In this communication, a chiral squaramide-catalyzed asymmetric dearomative tandem annulation reaction of unmodified Morita-Baylis-Hillman alcohols with azomethine imines has been achieved through a kinetic resolution of MBH alcohols under mild conditions
TiO2@UiO-68-CIL: A Metal-Organic-Framework-Based Bifunctional Composite Catalyst for a One-Pot Sequential Asymmetric Morita-Baylis-Hillman Reaction
Hu, Yu-Hong,Liu, Cong-Xue,Wang, Jian-Cheng,Ren, Xiu-Hui,Kan, Xuan,Dong, Yu-Bin
supporting information, p. 4722 - 4730 (2018/10/24)
A chiral ionic liquid (CIL) moiety of a l-pyrrolidin-2-ylimidazole-decorated homochiral UiO-68-type metal-organic framework, UiO-68-CIL (1), was successfully prepared by the combination of a new premodified chiral CIL ligand (H2L-CIL) and ZrCl4 via a solvothermal method. The TiO2-loaded TiO2@UiO-68-CIL (2) was prepared by impregnating 1 in a toluene solution of Ti(OPri)4 and sequential in situ hydrolysis. The obtained 2 can be a bifunctional asymmetric heterogeneous catalyst to successfully promote the one-pot Morita-Baylis-Hillman reaction starting from aromatic alcohols in a tandem way.
Synthetic method of multi-hydrogen-bond ferrocene catalyst
-
Paragraph 0013, (2018/12/14)
The invention provides a synthetic method of a multi-hydrogen-bond ferrocene catalyst. The optical pure (R)-N,N-dimethyl ferrocene ethylamine as a starting raw material, after the lithiation, a diphenylphosphine group is introduced to perform the acetylat
P-Stereogenic β-Aminophosphines: Preparation and Applications in Enantioselective Organocatalysis
Su, Hsin Y.,Taylor, Mark S.
, p. 3173 - 3182 (2017/03/23)
The synthesis of stereodefined β-aminophosphines having both carbon- and phosphorus-based chirality centers is described. The method involves resolution of a mixture of β-aminophosphine oxide diastereomers accessed by ring-opening of an amino alcohol-derived cyclic sulfamidate. A stereospecific, borane-promoted reduction of β-aminophosphine oxides, which occurs under mild conditions and with inversion of configuration at phosphorus, is a key step in this process. The products obtained are new building blocks for the synthesis of P-chiral ligands and organocatalysts. In a proof-of-concept application in organocatalysis, the diastereomeric P-chiral β-aminophosphine-based bifunctional thioureas displayed significantly different activities in the Morita-Baylis-Hillman reaction of methyl acrylate with benzaldehyde derivatives.
