| ชื่อเรื่อง | : | Convenient synthesis of 2,2-Dimethyl-3,4-dihydro-2 H-pyrano[2,3- b]quinolines |
| นักวิจัย | : | Parsekar, S.B. , Amonkar, C.P. , Parameswaran, P.S. , Tilve, S.G. |
| คำค้น | : | chemical extraction , Balfourodendron riedelianum , alkaloids , Wittig reaction |
| หน่วยงาน | : | National Institute Of Oceanography (NIO), India |
| ผู้ร่วมงาน | : | - |
| ปีพิมพ์ | : | 2553 |
| อ้างอิง | : | Synthetic Communications, vol.40(21); 3251-3258 , http://drs.nio.org/drs/handle/2264/3739 |
| ที่มา | : | - |
| ความเชี่ยวชาญ | : | - |
| ความสัมพันธ์ | : | - |
| ขอบเขตของเนื้อหา | : | - |
| บทคัดย่อ/คำอธิบาย | : | A convenient general synthesis of 2,2-dimethyl-3,4-dihydro-2H-pyrano[2,3-b]quinolines using the Wittig reaction is described. The o-nitrobenzaldehydes (1a-d) on reaction with phosphorane 2 provided (E)-ethyl-a-(2,2-dimethylprop-2-ene)-2-nitrocinnamates (3a-d) in excellent yields, which on cyclization with polyphosphoric acid followed by reductive cyclization using Fe/HCl afforded dihydropyranoquinolines (5a-d). Alternatively, the pyranoquinolines 5a-d were also synthesised from esters 3a-d by employing domino reductive cyclization in a single step |
| บรรณานุกรม | : |
Parsekar, S.B. , Amonkar, C.P. , Parameswaran, P.S. , Tilve, S.G. . (2553). Convenient synthesis of 2,2-Dimethyl-3,4-dihydro-2 H-pyrano[2,3- b]quinolines.
: National Institute Of Oceanography (NIO), India. Parsekar, S.B. , Amonkar, C.P. , Parameswaran, P.S. , Tilve, S.G. . 2553. "Convenient synthesis of 2,2-Dimethyl-3,4-dihydro-2 H-pyrano[2,3- b]quinolines".
: National Institute Of Oceanography (NIO), India. Parsekar, S.B. , Amonkar, C.P. , Parameswaran, P.S. , Tilve, S.G. . "Convenient synthesis of 2,2-Dimethyl-3,4-dihydro-2 H-pyrano[2,3- b]quinolines."
: National Institute Of Oceanography (NIO), India, 2553. Print. Parsekar, S.B. , Amonkar, C.P. , Parameswaran, P.S. , Tilve, S.G. . Convenient synthesis of 2,2-Dimethyl-3,4-dihydro-2 H-pyrano[2,3- b]quinolines. : National Institute Of Oceanography (NIO), India; 2553.
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