147377-67-1Relevant academic research and scientific papers
Squaramide-catalyzed asymmetric intramolecular oxa-michael reaction of α,β-unsaturated carbonyls containing benzyl alcohol: Construction of chiral 1-substituted phthalans
Son, Eun Chae,Kim, Seung Yeon,Kim, Sung-Gon
, p. 6826 - 6839 (2021/05/29)
Organocatalytic enantioselective intramolecular oxa-Michael reactions of benzyl alcohol bearing α,β-unsaturated carbonyls as Michael acceptors are presented herein. Using cinchona squaramide-based organocatalyst, enones as well as α,βunsaturated esters containing benzyl alcohol provided their corresponding 1,3-dihydroisobenzofuranyl-1-methylene ketones and 1,3-dihydroisobenzofuranyl-1-methylene esters in excellent yields with high enantioselectivities. In addition, enantioenriched 1,3-dihydroisobenzofuranyl-1-methylene ketone could be obtained from the Wittig/oxa-Michael reaction cascade of 1,3-dihydro-2-benzofuran-1-ol.
Efficient synthesis of polysubstituted isochromanones via a novel photochemical rearrangement
Xia, Wujiong,Shao, Yutian,Gui, Weijun,Yang, Chao
, p. 11098 - 11100 (2011/11/06)
A novel and convenient approach to the synthesis of polysubstituted isochromanones is described. Irradiation of 2-formyl phenylalkeno-derivatives with UV light in benzene solution afforded the corresponding products in up to 98% yield. The possible reaction mechanism is proposed and further supported by the isotopic experiments.
A General Synthetic Route to Fused Furans. Total Synthesis of (+)-Pallescensin A
Shishido, Kozo,Umimoto, Koji,Ouchi, Mikiko,Irie, Osamu,Omodani, Tomoki,et al.
, p. 328 - 375 (2007/10/02)
A general and facile synthetic route to fused furans has been developed.The key step of the transformation involves the intramolecular dipolar cycloaddition reaction of the nitrile oxides, 2 and 2', which were generated in situ from the correspondin
New Synthetic Strategy for the Construction of the BCD Ring System of Tanshinones
Shishido, Kozo,Takata, Takeshi,Omodani, Tomoki,Shibuya, Masayuki
, p. 557 - 560 (2007/10/02)
Employing a strategy for the construction of fused furans based on an intramolecular dipolar cycloaddition reaction of nitrile oxide, the BCD ring system 3 found in the tanshinone family as a common structural unit has been synthesized.
