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  • C07D307/00
    		•  Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom [2] HB CC 4C037
  • C07D307/02
    		•  .not condensed with other rings [2] HB CC 4C037
  • C07D307/04
    		•  ..having no double bonds between ring members or between ring members and non-ring members [2] HB CC 4C037
  • C07D307/06
    		•  ...with only hydrogen atoms or radicals containing only hydrogen and carbon atoms, directly attached to ring carbon atoms [2] HB CC 4C037
  • C07D307/08
    		•  ....Preparation of tetrahydrofuran [2] HB CC 4C037
  • C07D307/10
    		•  ...with substituted hydrocarbon radicals attached to ring carbon atoms [2] HB CC 4C037
  • C07D307/12
    		•  ....Radicals substituted by oxygen atoms [2] HB CC 4C037
  • C07D307/14
    		•  ....Radicals substituted by nitrogen atoms not forming part of a nitro radical [2] HB CC 4C037
  • C07D307/16
    		•  ....Radicals substituted by carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals [2] HB CC 4C037
  • C07D307/18
    		•  ...with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms [2] HB CC 4C037
  • C07D307/20
    		•  ....Oxygen atoms [2] HB CC 4C037
  • C07D307/22
    		•  ....Nitrogen atoms not forming part of a nitro radical [2] HB CC 4C037
  • C07D307/24
    		•  ....Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen [2] HB CC 4C037
  • C07D307/26
    		•  ..having one double bond between ring members or between a ring member and a non-ring member [2] HB CC 4C037
  • C07D307/28
    		•  ...with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to ring carbon atoms [2] HB CC 4C037
  • C07D307/30
    		•  ...with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms [2] HB CC 4C037
  • C07D307/32
    		•  ....Oxygen atoms [2] HB CC 4C037
  • C07D307/32,500
    		•  .....with a doubly bound oxygen atom, directly attached in position 3 HB CC 4C037
  • C07D307/33
    		•  .....in position 2, the oxygen atom being in its keto or unsubstituted enol form [5] HB CC 4C037
  • C07D307/33,100
    		•  ......with only hydrogen atoms or hydrocarbon groups, attached to other ring carbon atoms HB CC 4C037
  • C07D307/33,150
    		•  .......production of gamma-butyrolactone HB CC 4C037
  • C07D307/33,200
    		•  ......with hydrocarbon groups substituted by hetero atoms, attached to other ring carbon atoms HB CC 4C037
  • C07D307/33,210
    		•  .......groups substituted by halogen atoms HB CC 4C037
  • C07D307/33,300
    		•  ......with hetero atoms, carboxyl groups or reactive derivatives thereof, attached to other ring carbon atoms HB CC 4C037
  • C07D307/33,310
    		•  .......Halogen atoms HB CC 4C037
  • C07D307/33,320
    		•  .......Nitrogen atoms HB CC 4C037
  • C07D307/33,330
    		•  .......Oxygen atoms HB CC 4C037
  • C07D307/33,335
    		•  ........Lactone of sugar acid HB CC 4C037
  • C07D307/33,340
    		•  .......Carboxyl groups; derivatives thereof HB CC 4C037
  • C07D307/34
    		•  ..having two or three double bonds between ring members or between ring members and non-ring members [2] HB CC 4C037
  • C07D307/36
    		•  ...with only hydrogen atoms or radicals containing only hydrogen and carbon atoms, directly attached to ring carbon atoms [2] HB CC 4C037
  • C07D307/38
    		•  ...with substituted hydrocarbon radicals attached to ring carbon atoms [2] HB CC 4C037
  • C07D307/40
    		•  ....Radicals substituted by oxygen atoms [2] HB CC 4C037
  • C07D307/42
    		•  .....Singly bound oxygen atoms [2] HB CC 4C037
  • C07D307/44
    		•  ......Furfuryl alcohol [2] HB CC 4C037
  • C07D307/45
    		•  ......Oxygen atoms acylated by a cyclopropane containing carboxylic acyl radical, e.g. chrysanthemumates [3] HB CC 4C037
  • C07D307/46
    		•  .....Doubly bound oxygen atoms, or two oxygen atoms singly bound to the same carbon atom [2] HB CC 4C037
  • C07D307/48
    		•  ......Furfural [2] HB CC 4C037
  • C07D307/50
    		•  .......Preparation from natural products [2] HB CC 4C037
  • C07D307/52
    		•  ....Radicals substituted by nitrogen atoms not forming part of a nitro radical [2] HB CC 4C037
  • C07D307/54
    		•  ....Radicals substituted by carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals [2] HB CC 4C037
  • C07D307/56
    		•  ...with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms [2] HB CC 4C037
  • C07D307/58
    		•  ....One oxygen atom, e.g. butenolide [2] HB CC 4C037
  • C07D307/60
    		•  ....Two oxygen atoms, e.g. succinic anhydride [2] HB CC 4C037
  • C07D307/60@A
    		•  Manufacturing method of anhydrous maleic acid HB CC 4C037
  • C07D307/60@B
    		•  .using oxydation of hydrocarbon HB CC 4C037
  • C07D307/60@E
    		•  .using dehydration of maleic acid HB CC 4C037
  • C07D307/60@F
    		•  .Separation; purification HB CC 4C037
  • C07D307/60@Z
    		•  Others HB CC 4C037
  • C07D307/62
    		•  ....Three oxygen atoms, e.g. ascorbic acid [2] HB CC 4C037
  • C07D307/64
    		•  ....Sulfur atoms [2] HB CC 4C037
  • C07D307/66
    		•  ....Nitrogen atoms [2] HB CC 4C037
  • C07D307/68
    		•  ....Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen [2] HB CC 4C037
  • C07D307/70
    		•  ....Nitro radicals [2] HB CC 4C037
  • C07D307/71
    		•  .....attached in position 5 [2] HB CC 4C037
  • C07D307/72
    		•  ......with hydrocarbon radicals, substituted by nitrogen-containing radicals, attached in position 2 [2] HB CC 4C037
  • C07D307/73
    		•  .......by amino or imino, or substituted amino or imino radicals [2] HB CC 4C037
  • C07D307/74
    		•  .......by hydrazino or hydrazono or such substituted radicals [2] HB CC 4C037
  • C07D307/75
    		•  ........having carboxylic acyl radicals or their thio or nitrogen analogues directly attached to the hydrazino or hydrazono radical, e.g. hydrazides [2] HB CC 4C037
  • C07D307/76
    		•  ........having carbonic acyl radicals or their thio or nitrogen analogues directly attached to the hydrazino or hydrazono radical, e.g. semicarbazides [2] HB CC 4C037
  • C07D307/77
    		•  .ortho- or peri-condensed with carbocyclic rings or ring systems [2] HB CC 4C037
  • C07D307/78
    		•  ..Benzo [b] furans; Hydrogenated benzo [b] furans [2] HB CC 4C037
  • C07D307/79
    		•  ...with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to carbon atoms of the hetero ring [2] HB CC 4C037
  • C07D307/80
    		•  ....Radicals substituted by oxygen atoms [2] HB CC 4C037
  • C07D307/81
    		•  ....Radicals substituted by nitrogen atoms not forming part of a nitro radical [2] HB CC 4C037
  • C07D307/82
    		•  ...with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to carbon atoms of the hetero ring [2] HB CC 4C037
  • C07D307/83
    		•  ....Oxygen atoms [2] HB CC 4C037
  • C07D307/84
    		•  ....Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen [2] HB CC 4C037
  • C07D307/85
    		•  .....attached in position 2 [2] HB CC 4C037
  • C07D307/86
    		•  ...with an oxygen atom directly attached in position 7 [2] HB CC 4C037
  • C07D307/87
    		•  ..Benzo [c] furans; Hydrogenated benzo [c] furans [2] HB CC 4C037
  • C07D307/88
    		•  ...with one oxygen atom directly attached in position 1 or 3 [2] HB CC 4C037
  • C07D307/885
    		•  ....3,3-Diphenylphthalides [5] HB CC 4C037
  • C07D307/89
    		•  ...with two oxygen atoms directly attached in positions 1 and 3 [2] HB CC 4C037
  • C07D307/89@A
    		•  Manufacturing method of anhydrous phthalic acid HB CC 4C037
  • C07D307/89@B
    		•  using liquid phase oxidation of hydrocarbon HB CC 4C037
  • C07D307/89@C
    		•  using gas phase oxidation of hydrocarbon HB CC 4C037
  • C07D307/89@D
    		•  Separation; purification HB CC 4C037
  • C07D307/89@Z
    		•  Others HB CC 4C037
  • C07D307/90
    		•  ...with an oxygen atom in position 1 and a nitrogen atom in position 3, or vice versa [2] HB CC 4C037
  • C07D307/91
    		•  ..Dibenzofurans; Hydrogenated dibenzofurans [2] HB CC 4C037
  • C07D307/92
    		•  ..Naphthofurans; Hydrogenated naphthofurans [2] HB CC 4C037
  • C07D307/93
    		•  ..condensed with a ring other than six-membered [2] HB CC 4C037
  • C07D307/935
    		•  ...Not further condensed cyclopenta [b] furans or hydrogenated cyclopenta [b] furans [3] HB CC 4C037
  • C07D307/937
    		•  ....with hydrocarbon or substituted hydrocarbon radicals directly attached in position 2, e.g. prostacyclins [5] HB CC 4C037
  • C07D307/94
    		•  .spiro-condensed with carbocyclic rings or ring systems, e.g. griseofulvins [2] HB CC 4C037
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