01205nas a2200181   4500008004100000022001400041245015800055210006900213260011000282300001200392490000600404520039100410100001700801700002900818700002100847700003000868856012500898       2015                        eng d  a2040-336400aSimple method for the preparation of ultra-small palladium nanoparticles and their utilization for the hydrogenation of terminal alkyne groups to alkanes0 aSimple method for the preparation of ultrasmall palladium nanopa  aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcNOV  a872-8760 v73 a<p>A simple and convenient method for the preparation of ultra-small palladium nanoparticles (Pd-NPs) by a modified digestive ripening method is described. These nanoparticles catalyse the hydrogenation of the terminal alkyne groups to alkanes selectively, and show no effect on other labile protecting and internal alkyne or internal/external alkene groups present in the molecule.</p>1 aSeth, Jhumur1 aKona, Chandrababu, Naidu1 aDas, Shyamsundar1 aPrasad, Bhagavatula L. V.  uhttps://library.ncl.res.in/content/simple-method-preparation-ultra-small-palladium-nanoparticles-and-their-utilization-001724nas a2200193   4500008004100000022001400041245009200055210006900147260000800216300000700224490000800231520108600239100002401325700002101349700001701370700001701387700000501404856012101409       2021                        eng d  a0974-362600aSynthesis of four diastereomers of notoryne and their C-13 NMR chemical shifts analysis0 aSynthesis of four diastereomers of notoryne and their C13 NMR ch  cSEP  a760 v1333 aIn this manuscript we document the details of the synthesis of four diastereomers of notoryne. The synthesis of one of the diastereomer having a similar relative stereochemistry of substituents on the both THF rings like notoryne, however, being the relative stereochemistry between the bridging carbon of these two THF units is changed from anti to syn has been executed mainly to learn how the ring carbon chemical shifts vary with this change. Interestingly, the deviations are found mainly for the carbons of THF ring that bears the Br-group. In addition to this isomer, three more diastereomers having the relative stereochemistry of substituents on either of the THF rings varied have been also synthesized. All four diastereomers have been subjected for extensive NMR studies and their C-13 NMR chemical shifts have been compared with notoryne and laurendecumenyne B. In addition, chemical shifts for the four diastereomers along with these natural products were calculated with the help of DFT calculations and compared to the experimentally obtained chemical shift values.1 aSenapati, Sibadatta1 aDas, Shyamsundar1 aDixit, Ruchi1 aVanka, Kumar1 a  uhttps://library.ncl.res.in/content/synthesis-four-diastereomers-notoryne-and-their-c-13-nmr-chemical-shifts-analysis