00527nas a2200121   4500008004100000022001400041245007500055210006900130260007500199300001400274100001900288856009800307       2006                        eng d  a0936-521400aNazarov reagent: a novel reagent for the synthesis of natural products0 aNazarov reagent a novel reagent for the synthesis of natural pro  aRUDIGERSTR 14, D-70469 STUTTGART, GERMANYbGEORG THIEME VERLAG KGcOCT  a2853-28541 aKaur, Tanpreet  uhttps://library.ncl.res.in/content/nazarov-reagent-novel-reagent-synthesis-natural-products-001433nas a2200217   4500008004100000022001400041245010200055210006900157260007500226300001200301520059500313653001400908653002000922653002900942653001100971653003300982653002201015100002801037700001901065856013101084       2007                        eng d  a0936-521400aEfficient one-pot synthesis of alpha-amino phosphonates catalyzed by bismuth nitrate pentahydrate0 aEfficient onepot synthesis of alphaamino phosphonates catalyzed   aRUDIGERSTR 14, D-70469 STUTTGART, GERMANYbGEORG THIEME VERLAG KGcMAR  a745-7483 a<p>A simple, efficient, and environmentally benign method has been developed for the synthesis of alpha-amino phosphonates through a one-pot reaction of aldehydes with amines and diethyl phosphite in the presence of bismuth nitrate pentahydrate as a catalyst. Some of the major advantages of this protocol are: good yields, the involvement of a less-expensive and non-toxic catalyst, mild and solvent-free reaction conditions and also tolerance towards other functional groups present in the substrates. Eighteen examples are described, highlighting the substrate scope of the reaction.</p>10aaldehydes10aalkyl phosphite10aalpha-amino phosphonates10aamines10abismuth nitrate pentahydrate10asynthetic methods1 aBhattacharya, Asish, K.1 aKaur, Tanpreet  uhttps://library.ncl.res.in/content/efficient-one-pot-synthesis-alpha-amino-phosphonates-catalyzed-bismuth-nitrate-pentahydrate01119nas a2200229   4500008004100000022001400041245009900055210006900154260007500223300001400298520027300312653000600585653002000591653001800611653003400629653001100663653001600674100002800690700001900718700002400737856012800761       2010                        eng d  a0039-788100aSynthesis of the antibacterial benzoquinone primin and its water-soluble analogue, primin acid0 aSynthesis of the antibacterial benzoquinone primin and its water  aRUDIGERSTR 14, D-70469 STUTTGART, GERMANYbGEORG THIEME VERLAG KGcAPR  a1141-11443 a<p>The biologically active natural product, primin and its water-soluble acid analogue, primin acid are prepared in 34% and 25% overall yields, respectively, from a common intermediate using a Grignard reaction and a Johnson-Claisen rearrangement as the key steps.</p>10a110a4-benzoquinones10aAntibacterial10aJohnson-Claisen rearrangement10aprimin10aprimin acid1 aBhattacharya, Asish, K.1 aKaur, Tanpreet1 aGanesh, Krishna, N.  uhttps://library.ncl.res.in/content/synthesis-antibacterial-benzoquinone-primin-and-its-water-soluble-analogue-primin-acid-0