endocyclic मीनिंग इन हिंदी

उदाहरण वाक्य

1. These include pseudoacyl halides, pseudoesters, endocyclic and exocyclic-N pseudoamides, and pseudoanhydrides.
2. Moreover, substitution on both the carbon and nitrogen atoms of the nitrone dipole, and acyclic and endocyclic nitrones are all tolerated.
3. This coordination serves to activate the BH 3 as a hydride donor and to enhance the Lewis acidity of the catalyst s endocyclic boron.
4. The group to which the endocyclic bond migrates can also be selectively added to the ring based on the functionality already present, for example 1, 2 addition into a cyclic ketone.
5. Subsequently, the endocyclic boron of the catalyst coordinates to the ketone at the sterically more accessible electron lone pair ( i . e . the lone pair closer to the smaller substituent, Rs ).
6. Stereospecific reduction of the endocyclic double bond by NADPH and hydroxylation provides the Wieland-Gumlich aldehyde, which was first isolated by Heimberger and Scott in 1973, although previously synthesized by Wieland and Gumlich in 1932.
7. The predominant driving force for this face-selective, intramolecular hydride transfer is the simultaneous activation of the borane reagent by coordination to the Lewis basic nitrogen and the enhancement of the Lewis acidity of the endocyclic boron atom for coordination to the ketone.
8. This plant disease is caused by " "'Endocronartium harknessii " "'( asexual name is " Peridermium harknessii " ), an autoecious, endocyclic, rust fungus that grows in the vascular cambium of the host.
9. To determine if the sugar is ? or ?, the structure is drawn in a Fischer projection; if the endocyclic oxygen ( O5 ) and exocyclic oxygen ( O1 ) are " cis ", the sugar is ?; if they are " trans ", the sugar is ?.