584-98-5Relevant articles and documents
A novel synthesis of maleic anhydride-1 and 2- 13C and its subsequent conversion to labeled maleic hydrazide
Patterson,Braun,Haidar,et al.
, p. 439 - 443,441,442 (1978)
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Stereospecific Nickel-Catalyzed Reductive Cross-Coupling of Alkyl Tosylate and Allyl Alcohol Electrophiles
Alexanian, Erik J.,Tercenio, Quentin D.
supporting information, p. 7215 - 7219 (2021/09/22)
The stereospecific cross-coupling of easily accessed electrophiles holds significant promise in the construction of C-C bonds. Herein, we report a nickel-catalyzed reductive coupling of allyl alcohols with chiral, nonracemic alkyl tosylates. This cross-coupling delivers valuable allylation products with high levels of stereospecificity across a range of substrates. The catalytic system consists of a simple nickel salt in conjunction with a commercially available reductant and importantly represents a rare example of a cross-coupling involving the C-O bonds of two electrophiles.
Stereoselective total synthesis of obolactones and 7′,8′-dihydroobolactones
Fernandes, Rodney A.,Kumar, Praveen,Saini, Deepak
, p. 18976 - 18982 (2021/10/29)
A concise stereoselective total synthesis of two diastereomeric obolactones and 7′,8′-dihydroobolactones has been achieved using a metal-free catalytic δ-hydroxyalkynone rearrangement, which could provide the required dihydro-γ-pyrone moiety. The desired first stereogenic center was installed through the chiral pool material,l-aspartic acid. Next, the allylation reaction was strategically utilized to provide the requisite olefin bond for the intended ring-closing metathesis, allowing the installation of the remaining dihydro-α-pyrone moiety in the natural products. It also enabled the targeting of both dihydro-α-pyrone diastereomers. Thus, the first stereoselective total synthesis of (+)-7′,8′-dihydroobolactone was accomplished, establishing its structure and absolute configuration.
