7330-76-9Relevant academic research and scientific papers
Annulated oxa-cage frameworks via Claisen rearrangement and ring-closing metathesis
Kotha, Sambasivarao,Cheekatla, Subba Rao,Chaurasia, Usha Nandan
, (2020/11/12)
In our quest to design high-density fuels, we report a variety of structurally interesting new annulated oxa-cage frameworks. Here, we investigated a linear synthetic sequence, which relies on reductive C–C bond cleavage and ring-closing metathesis as key
Synthesis of functionalized cage propellanes and D3-Trishomocubanes via the ring-closing metathesis and acid-promoted rearrangement
Kotha, Sambasivarao,Cheekatla, Subba Rao
, p. 84 - 93 (2018/11/27)
Several functionalized cage propellanes and D3-trishomocubanes containing spiro linkage have been reported starting with commercially available materials such as 1,4-hydroquinone and dicyclopentadiene. In this regard, Claisen rearrangement, Die
Ring-Closing Metathesis Approach to Cage Propellanes Containing Oxepane and Tetrahydrofuran Hybrid System
Kotha, Sambasivarao,Cheekatla, Subba Rao,Mhatre, Darshan S.
, p. 5339 - 5350 (2017/11/29)
The preparation of a variety of structurally interesting oxygenated cage compounds involving atom-economic processes such as Claisen rearrangement, Diels-Alder reaction, [2+2] photocycloaddition, and ring-closing metathesis (RCM) as key steps is reported.
Design and synthesis of novel bis-annulated caged polycycles via ring-closing metathesis: Pushpakenediol
Kotha, Sambasivarao,Dipak, Mirtunjay Kumar
, p. 2664 - 2670 (2015/02/19)
Intricate caged molecular frameworks are assembled by an atom economical process via a Diels-Alder (DA) reaction, a Claisen rearrangement, a ring-closing metathesis (RCM) and an alkenyl Grignard addition. The introduction of olefinic moieties in the penta
Colorant compounds, intermediates, and compositions
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Page/Page column 5, (2010/11/24)
Colorants are disclosed that exhibit high color strength, bright shades, and high thermal stability. Such compounds have found application as colorants for polyethylene terephthalate (“PET”). Potential end uses include disperse dyes, non-warping pigments, decolorizable colorants, and the like. Compounds and methods for synthesis include benzodifuranone related compounds, benzene centered lactones, benzene centered lactams; benzene-centered thiolactones; naphthalene-centered lactones; naphthalene-centered lactams; naphthalene-centered thiolactones; anthraquinone-centered lactones; anthraquinone-centered lactams; anthraquinone-centered thiolactones; anthracene-centered lactones; anthracene-centered lactams; anthracene-centered thiolactones; hetero-aromatic-centered lactones; hetero-aromatic centered lactams and hetero-aromatic centered thiolactone compounds, and the like. Furthermore, resins such as PET or other polymeric resins containing the compounds are disclosed.
Design and synthesis of novel propellanes by using claisen rearrangement and ring-closing metathesis as the key steps
Kotha, Sambasivarao,Dipak, Mirtunjay Kumar
, p. 4446 - 4450 (2008/02/08)
Novel hexacyclic caged compounds are prepared by a combination of Claisen rearrangement and ring-closing metathesis (RCM). Additionally, a Grignard reaction in conjugation with RCM produced intricate hexacyclic caged molecules.
Combined Multiple Claisen Rearrangement and Ring-closing Metathesis as a Route to Naphthalene, Anthracene, and Anthracycline Ring Systems
Chattopadhyay, Shital K.,Pal, Benoy K.,Maity, Susama
, p. 1190 - 1191 (2007/10/03)
A new route involving double Claisen rearrangement of a suitable 1,4-diallyloxyarene system followed by ring-closing metathesis of the resulting diene has been developed for the synthesis of various benzannulated cyclohexenes. An important demonstration of this methodology is the construction of the tetracyclic quinophenolic ring system of the clinically important anthracyclines.
