A5018205250- Coordination Chemistry and Organometallics
- Organoboron and organosilicon chemistry
- Synthesis and characterization of novel inorganic/organometallic compounds
- Organometallic Complex Synthesis and Catalysis
- Chemical Synthesis and Reactions
- Asymmetric Hydrogenation and Catalysis
- Catalytic Cross-Coupling Reactions
- Synthesis and Characterization of Heterocyclic Compounds
- Chemical Synthesis and Analysis
- Click Chemistry and Applications
- Fluorine in Organic Chemistry
- Indoor Air Quality and Microbial Exposure
- Carbon dioxide utilization in catalysis
Academy of Scientific and Innovative Research
2017-2021
National Chemical Laboratory
1968-2021
Savitribai Phule Pune University
2016-2019
Abstract The past decade has witnessed staggering progress in the chemistry of compounds with low‐valent main‐group elements. Although these discoveries are mostly fundamental by nature, show promising reactivity towards small molecule activation. stems from modest HOMO–LUMO energy gap; a characteristic known for transition metals. journey began 2005 facile activation dihydrogen an alkyne analog germanium [ArGe≡GeAr; Ar=2,6‐Trip 2 ‐C 6 H 3 (Trip=2,4,6‐ i Pr )]. Subsequently, tremendous been...
A benz-amidinato calcium compound, [PhC(NiPr)2CaI] (1), catalyzed hydroboration of a wide range aldehydes and ketones using pinacolborane (HBpin) at room temperature is reported. The catalyst shows functional group tolerance even towards OH NH groups. strategy was further extended to imines.
Ever increasing demand for green and sustainable chemical processes has set up a drive to replace transition metals with earth-abundant, nontoxic, environmentally benign alternatives. In this regard, the alkaline earth metal complexes have attracted significant attention. Herein, we used β-diketiminato ligand methyl-pyridine side arm synthesize magnesium (1) calcium (2) compounds. The constitutions of 1 2 been confirmed by single crystal X-ray studies, which show that atom in possesses...
The hydroboration of alkenes and alkynes using easily accessible lithium compounds [2,6-di-tert-butyl phenolatelithium (1a) 1,1' dilithioferrocene (1b)] has been achieved with good yields, high functional group tolerance excellent chemoselectivity. Deuterium-labeling experiments confirm the cis-addition pinacolborane. methodology further extended to myrcene, which undergoes selective 4,3-hydroboration. DFT calculations provide insights into mechanism.
Abstract Organocalcium compounds have been reported as efficient catalysts for various transformations, cases in which one of the substrates contained an E−H (E=B, N, Si, P) bond. Here, we look at possibility employing organocalcium compound a transformation none precursors has polar This study demonstrates utilization well‐defined amidinatocalcium iodide, [PhC(N i Pr) 2 CaI] ( 1 ) cyanosilylation variety aldehydes and ketones with Me 3 SiCN under ambient conditions without need any...
Despite the explosive growth of germylene compounds as ligands in transition metal complexes, there is a modicum precedence for zinc complexes. In this work, synthesis and characterization new complexes [PhC(NtBu)2 Ge{N(SiMe3 )2 }→ZnX2 ]2 (X= Br (2) I (3)) supported by (benz)-amidinato are reported. The solid-state structures 2 3 have been validated single-crystal X-ray diffraction studies, which revealed dimeric nature with distorted tetrahedral geometries around Ge Zn center. DFT...
Herein, we introduce isocyanide as a ligand in main group chemistry and describe the facile isolation of Ge(ii) dication. The reaction 2,6-dimethylphenylisocyanide with GeCl2 leads to formation dication two [GeCl3](-) molecules counter anions. dicationic center is bound four ligands also holds lone pair electrons. DFT calculations reveal that stabilized only by σ-donation from ligands. Natural population analysis gives charge +0.74 on center, indicating positive shared substituents.
Abstract Soluble calcium halides reported so far are mostly dimeric in nature. The occupy the bridging position and thus provide additional coordination to metal. We obtained a monomeric iodide [{PhC(N i Pr) 2 }CaI(thf) 3 ] ( 1 ) from reaction of [PhC(N ]Li with CaI THF. compound has been stabilized by electronic donation steric shielding amidinate ligand as well three THF molecules. does not show any propensity towards exchange reaction. When same is carried out diethyl ether instead THF,...
The reaction of silylene [PhC(N<italic>t</italic>Bu)<sub>2</sub>SiN(SiMe<sub>3</sub>)<sub>2</sub>] with ZnI<sub>2</sub>leads to both monomeric [PhC(N<italic>t</italic>Bu)<sub>2</sub>Si{N(SiMe<sub>3</sub>)<sub>2</sub>} → ZnI<sub>2</sub>]·THF (<bold>1</bold>) and dimeric ZnI<sub>2</sub>]<sub>2</sub>(<bold>2</bold>) adducts which are inter-convertible.
A truly green chemical process would avoid the use of an external catalyst, while still achieving high efficiency. This has been realized in very recent past for hydroboration, cyanosilylation, acetalization, and aza-Michael addition, among other reactions. The current combined computational experimental study unlocks secret to how this highly desirable outcome is accomplished: one reactants also acts as catalyst. Specifically, shown (i) important hydroboration reaction, with pinacolborane...
Abstract Disubstituted monoisocyanates were synthesized and their reactivities studied by the spectroscopic method.
Abstract The synthesis of tris‐( p ‐isocyanato phenyl) cyanurate is described. Unlike the isocyanate groups directly attached to carbon atoms sym ‐triazine ring in compound synthesized are stable.
In this paper, we have used two N,O-ketiminato ligands (L1 and L2) with biphenyl terphenyl substituent on the nitrogen atom. Deprotonation of L1 KN(SiMe3 )2 subsequent reaction MgI2 led to a homoleptic dinuclear magnesium complex (1) Mg2 O2 four-membered ring. nBuLi afforded unusual (2) Extension ligand for calcium resulted in trinuclear (3) six Ca2 rings. We could not isolate any chelating when L2 was as ligand, only oxygen bound (4) (5) adducts were isolated. DFT studies performed...
Abstract Review: [61 refs.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA New Polyurethane Millable GumN. D. Ghatge and S. YadavCite this: Ind. Eng. Chem. Prod. Res. Dev. 1969, 8, 2, 182–184Publication Date (Print):June 1, 1969Publication History Published online1 May 2002Published inissue 1 June 1969https://pubs.acs.org/doi/10.1021/i360030a017https://doi.org/10.1021/i360030a017research-articleACS PublicationsRequest reuse permissionsArticle Views108Altmetric-Citations-LEARN ABOUT THESE METRICSArticle Views are the...